Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fc0254f21cbf0df…

MALICIOUS

PDF

99.0 KB Created: 2021-09-07 21:23:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7bd1cdb102aba6fbac956233f564ae9b SHA-1: d1e92ef622830480e26514015792d67fa6cd326d SHA-256: 0fc0254f21cbf0df3fd6f15aaacf91f873ebbd137d802e16161b14731a96ccad
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to lure users to potentially malicious destinations. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://rajatotogroup3.com/contents//files/75797773630.pdf In PDF document text
    • http://www.supair-lux.hu/ckfinder/userfiles/files/87333819026.pdfIn PDF document text
    • http://autosvilar.com/uploads/ckfinder/files/23253518195.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161038ce9d8947---nujulemuj.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/r76iou1mmq3hefimps0c3ul7a5/vaxogipesalixutiguk.pdfIn PDF document text
    • http://globalcenterhotels.com/bot/ckfinder/uf/files/82966401217.pdfIn PDF document text
    • https://elegune.net/files/galeria/files/keferazawalojefaj.pdfIn PDF document text
    • http://retailcop.ca/files/viduzesubekegatakebeg.pdfIn PDF document text
    • http://baheth24cars.com/ckfinder/userfiles/files/figurigisigomu.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/696o00r8nj3565mknmol4oebmj/womagovi.pdfIn PDF document text
    • https://komunalno-vrgorac.hr/files/60677576962.pdfIn PDF document text
    • http://tomboy2.com/images/library/File/lemenixopire.pdfIn PDF document text
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/354ec608e22fc72712c5b857e84d9cda/gexer.pdfIn PDF document text
    • http://www.atccs3.it/atccs3/fckeditor/editor/ckfinder/userfiles/files/lonuzemesitini.pdfIn PDF document text
    • http://woori-tour.kr/FileData/ckfinder/files/20210813_2F5197D65558E3B8.pdfIn PDF document text
    • https://aitalk.vn/upload/files/17023252539.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/7tfb1se0es6op8moira3gph5go/punozexutev.pdfIn PDF document text
    • http://burchiellati.com/file_fck/file/94752549390.pdfIn PDF document text
    • https://xn--mgbaf4adbs1bd2i.net/upload/ckfinder/files/84030224573.pdfIn PDF document text
    • https://dpengineers.info/admin/userfiles/file/mixurupipisabujegewopop.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b43b0090be6---40626544231.pdfIn PDF document text
    • http://studiobardinisrl.com/userfiles/files/zapoxol.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=dan+abnett+titanicus+pdfPDF link annotation
    • 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_off00011b68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B68 10588 bytes
SHA-256: 3d3dd0e6eee0a5c0a4e5fc4f6fd4f9cfef26dd8bcab46c838c9c5503b8127de0
font_01_sfnt_off00013387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13387 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B99 19364 bytes
SHA-256: 541e79ce3f79c43e6f97e4012a31051888699d898804a0bf911bbd186af495c1