Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5db448665153256…

MALICIOUS

PDF

364.3 KB Created: 2022-04-21 13:54:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: cace52a90378df745d45a81613a38fcd SHA-1: d56af5977a0fd2598f1afa60b6d18b36d605ccd3 SHA-256: c5db448665153256d869822fe79d381f71d2a6d3e8a9491b4f14facf1fb8ff19
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and links to external URLs, one of which is identified as an SEO redirector for a "free-download phishing" lure. The PDF also points to a compromised WordPress upload storage, suggesting it's part of a phishing campaign. The embedded JavaScript likely facilitates the exploitation or download of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6388

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://cafij.co.za/XSRYdR1H?utm_term=arundhati+tamil+movie++in+tamilrockers PDF link annotation
    • http://unternehmensberatung-hegenbarth.de/userfiles/file/53729689126.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/5c20d7cfaf92dd350d8ffc90d2f47d8c/76599402404.pdfIn PDF document text
    • http://csadmin.a-spcc.jp/files/files/14248023474.pdfIn PDF document text
    • https://kunatelifarak.weebly.com/uploads/1/3/2/7/132712072/163a80737bca027.pdfIn PDF document text
    • https://zozolesib.weebly.com/uploads/1/3/4/6/134631165/vivurakutur.pdfIn PDF document text
    • https://duproject.com/uploadEditor/files/16373718728.pdfIn PDF document text
    • https://nubagusajol.weebly.com/uploads/1/3/4/2/134235051/lekitejezob.pdfIn PDF document text
    • http://www.kuchnie.franpolmeble.pl/upload/file/90510301239.pdfIn PDF document text
    • http://ponozky.gultio.cz/webpagebuilder/ckfinder/userfiles/files/modisagukekeke.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/16229f31413616---22418375696.pdfIn PDF document text
    • https://peusch.lu/userfiles/files/7719524466.pdfIn PDF document text
    • https://myjava.sk/up/files/44988277874.pdfIn PDF document text
    • http://hotel-ambassador-nice.com/upload/files/24360457254.pdfIn PDF document text
    • https://proxkimya.com/resimler/files/90851330075.pdfIn PDF document text
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/t8ol1p6i5c5khu7l2p2m7hhlib/sanagi.pdfIn PDF document text
    • https://bentonhomebuilders.com/kcfinder/nizukifas.pdfIn PDF document text
    • http://thailandhemp.info/datas/files/rujifivekexisizabujej.pdfIn PDF document text
    • https://www.caposalasicilia.com/admin/ckeditor/kcfinder/upload/files/norogoxemidobamoverada.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621d27e993a1a---91172836778.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/162407a6f48431---9103272618.pdfIn PDF document text
    • https://abzesolar.com/uploads/files/91652802306.pdfIn PDF document text
    • https://hsdinstruments.nl/uploads/files/wisigimerarumunigijerufox.pdfIn PDF document text
    • http://oks.urmon.uz/kcfinder/upload/files/sowevapogojakusofo.pdfIn PDF document text
    • http://gsmontaggi.it/userfiles/files/81497519477.pdfIn PDF document text
    • https://rubenoferro.com/userfiles/file/695088197.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/3cbaaa13b0b8f56560abfb563e69ca80/dususitafewebubitenegep.pdfIn PDF document text
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/161ffd4fb13b52---relovolevavupuperigori.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/16227cc885d7b6---tasenadi.pdfIn PDF document text
    • https://en.unecol.com/uploads/kcfinder/upload/files/suluvaz.pdfIn PDF document text
    • http://winagain.co.za/kcfinder/upload/files/24694069753.pdfIn PDF document text
    • http://www.barrettmotors.com.au/templates/admin/js/kcfinder/upload/files/vipedowapomibug.pdfIn PDF document text
    • http://gzperson.com/uploadfile/files/rijifimodakufitexeb.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fae5050a6d1---womozisipibitov.pdfIn PDF document text
    • http://alburigiott.it/userfiles/files/gitumeno.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1624ac43a00c30---87734941426.pdfIn PDF document text
    • https://kifakofaw.weebly.com/uploads/1/3/4/0/134016777/a046a068982a474.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
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053d69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53D69 19828 bytes
SHA-256: b317d663274fbec12f48cbca45b6294a0230c641b35ff9010e81af5937f109fc
font_01_sfnt_off00056ff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56FF3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0005880a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5880A 10872 bytes
SHA-256: 10ce029e2dee435f1a6cb623364fa321f8af9537e6c2e29fd3ab15f01949f23a