Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bbdf526b6d0585b…

MALICIOUS

PDF

53.9 KB Created: 2021-10-12 09:12:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: ed55925d21785c076e00a83eb5b11810 SHA-1: ae2250097309955ab401eac9d55c31c43c36daf6 SHA-256: 6bbdf526b6d0585b26ccfb687cb9044b332f56544a2f8fef26f9494f371c779f
124 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress upload directories and disposable domains, indicating a link farm designed to lure users to malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The file's structure and link distribution suggest it's part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4953

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://bwemfjhjk.friend-match.com/upload/files/gofadenesowekujag.pdf In PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132190b55008---61473304935.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/8f18f2a8a1bb60a6336eb74b94e82222/jijujagur.pdfIn PDF document text
    • https://hopclickhospitality.com/scgtest/team-explore/uploads/files/misitisijegato.pdfIn PDF document text
    • https://vildmarksjagt.dk/userfiles/file/26814347093.pdfIn PDF document text
    • http://zopos.zohukum.com/ckfinder/userfiles/files/xekojejiluxufanuxunowo.pdfIn PDF document text
    • http://ydtmuhendislik.com/ckfinder/userfiles/files/lilonabikajabesusasenew.pdfIn PDF document text
    • http://phupmirpol.pl/userfiles/file/poboxasosowetibi.pdfIn PDF document text
    • https://dveropolis.ru/upload_picture/39266617473.pdfIn PDF document text
    • http://fueandhair.com/userfiles/files/dibak.pdfIn PDF document text
    • http://colegiosantarosa.com/uploads/imagem/file/wilawazovifixevutuderewo.pdfIn PDF document text
    • http://abyss.sk/userfiles/file/rewizegozalarefodibuke.pdfIn PDF document text
    • http://tillyardci.com/userfiles/file/85354578415.pdfIn PDF document text
    • https://pergamine.com/ckfinder/userfiles/files/refipawuvuxawa.pdfIn PDF document text
    • http://www.boldino-hotel.com/ckfinder/userfiles/files/78250939431.pdfIn PDF document text
    • http://www.physedu.in/newsite/userfiles/files/12938467915.pdfIn PDF document text
    • http://crabandclaw.com/uploads/files/8069777474.pdfIn PDF document text
    • https://makanbanyak.net/contents/files/82972217711.pdfIn PDF document text
    • http://ipmarketing.net/FCKeditor/editor/filemanager/connectors/userfiles/file/53822210667.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/161380b4108d9f---52288426554.pdfIn PDF document text
    • https://alistairmills.com/ckfinder/userfiles/files/talikagesabisokadobiv.pdfIn PDF document text
    • http://alianzablue.com/aym_image/files/9766068814.pdfIn PDF document text
    • http://laclonghotel.vn/upload/files/42556696611.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/1hHberoKktI/uplcv?utm_term=the+wildfowl+and+wetlands+trustPDF link annotation

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