Malicious PDF — malware analysis report

Static analysis result for SHA-256 4454e1df6e2a2238…

MALICIOUS

PDF

247.6 KB Created: 2022-02-04 14:01:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 2987bfc89b7f5699c81a44134e672cb4 SHA-1: 8e6981969532177d8e98658e8cded4b58904f76f SHA-256: 4454e1df6e2a223835e1a1971e8f3bd201973c1f86564c62efbf9d7b26799a7a
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating it is a phishing lure, specifically using an SEO redirector to disguise a download link. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick users into downloading malicious content, likely through a compromised WordPress upload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5895

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://mifuj.co.za/XSRYdR1H?utm_term=chrome+performance+monitor PDF link annotation
    • http://panhongbo.com/ckfinder/userfiles/site_eachfun_com/files/14248250328.pdfIn PDF document text
    • https://bokaichenyu.com/upload/files/xovelivifitomi.pdfIn PDF document text
    • http://semihkerpiccilervesupersound.com/upload/file/wanugimugu.pdfIn PDF document text
    • http://wangyiphk.com/userfiles/345765342.pdfIn PDF document text
    • http://geo-equipe.it/userfiles/files/97734156175.pdfIn PDF document text
    • https://cvsc.co/userfiles/file/punogomasigasovadow.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16161f95867223---nalademimazedazu.pdfIn PDF document text
    • http://khaskhaan.mn/uploads/userfiles/files/dixodadanopitiwa.pdfIn PDF document text
    • http://akinmobilyavedekorasyon.com/app/webroot/kcfinder/upload/files/18033266798.pdfIn PDF document text
    • http://boonfagrandhome.com/user_img/files/34473026052.pdfIn PDF document text
    • https://yellowstonewildlife.com/35239390253.pdfIn PDF document text
    • http://dailygiasi.com/uploads/userfiles/file/kerutiwobolag.pdfIn PDF document text
    • http://lonsdale.ee/tipikas/uploads/sisupildid/xupotitozitesesoz.pdfIn PDF document text
    • http://chuanghuilaw.com/filespath/files/20210817140404.pdfIn PDF document text
    • https://toolsatool.com/userfiles/files/wunekadunanumagof.pdfIn PDF document text
    • http://bjdfszwy.com/filespath/files/20210903101653.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619c5e1572bc1---letuxuwej.pdfIn PDF document text
    • http://energyexcess.com/userfiles/file/nanemelategelanapabax.pdfIn PDF document text
    • http://bookblog.kr/data/file/files/92802015172.pdfIn PDF document text
    • https://rainwater.cc/images/uploads/files/sawevuxukupufedazax.pdfIn PDF document text
    • https://unecol.com/uploads/kcfinder/upload/files/sasinatomap.pdfIn PDF document text
    • https://bosingels.nl/ckfinder/userfiles/files/damofita.pdfIn PDF document text
    • http://nitecoreromania.ro/files/file/gaseguwanupoxuveg.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a14aab21c1f---84316059337.pdfIn PDF document text
    • https://bosingels.nl/ckfinder/userfiles/files/59964171986.pdfIn PDF document text
    • https://alkoplast.rs/files/43043807400.pdfIn PDF document text
    • http://rentappli.com/tinymce/jscripts/tiny_mce/plugins/phpimage/phpimage/upload/images/file/polejinirikajenulewi.pdfIn PDF document text
    • http://0965818789.com/CKEdit/upload/files/duxozaruniripevuniravona.pdfIn PDF document text
    • http://lg-palette.com/upload/files/69608357444.pdfIn PDF document text
    • http://mzch.pl/userfiles/file/ravixogum.pdfIn PDF document text
    • http://aokunoil.com/ckfinder/userfiles/files/wevujem.pdfIn PDF document text
    • https://dichvuhappyhouse.com/upload/files/54488011403.pdfIn PDF document text
    • https://testgit.begurholidays.com/uploads/userfiles/files/76991485287.pdfIn PDF document text
    • http://xn--80aatg4aaaddkhfhbf3evf.xn--p1ai/ckfinder/userfiles/files/xanukotakuniraladedibex.pdfIn PDF document text
    • http://xn--80aamdqpfpr.xn--p1ai/upload_picture/97228133152.pdfIn PDF document text
    • http://betriacum.madteam.net/ckfinder/userfiles/files/28276812244.pdfIn PDF document text
    • https://www.sudoku-cool.com/ckfinder/userfiles/files/tekitirunomigabekexe.pdfIn PDF document text
    • http://union.travel/ckfinder/userfiles/files/jerefonifafuzavivaver.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161c765347dd53---tugekiwegaf.pdfIn PDF document text
    • http://prosefkuchare.cz/userfiles/zimuvewore.pdfIn PDF document text
    • http://minipit.com/data/files/vorelafetulemanim.pdfIn PDF document text
    • http://resurrection-life.net/userfiles/files/78463271468.pdfIn PDF document text
    • https://www.hmgfinance.com/ckfinder/userfiles/files/lejubafukofimonosidi.pdfIn PDF document text
    • http://dream-mebel.com/pic/file/dewoxejanesovun.pdfIn PDF document text
    • http://www.anpamedical.com/kcfinder/upload/files/311114999.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    +4 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003730c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3730C 17012 bytes
SHA-256: d62d7ed902f18a74e9d8dfa5398f95a51dd669fc9bfa291aa1bf7b9146c83337
font_01_sfnt_off00039ea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39EA1 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003b5c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B5C5 10560 bytes
SHA-256: c3c747540940d7d22bbbc66d2c470928b25670330e5678680bd31115eaa6b988