Malicious PDF — malware analysis report

Static analysis result for SHA-256 97df1173dba72d48…

MALICIOUS

PDF

63.7 KB Created: 2021-07-19 23:37:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 6519df777001b171dd28d96ca9fbd54a SHA-1: b39528cefd5e76d5614bb2d8a0500052d5f2807f SHA-256: 97df1173dba72d484b006ca5e81989751ef2c67a6e365e939b90ec8ea49dc4ee
124 Risk Score

Malware Insights

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

The PDF file contains a link farm, with many URLs pointing to compromised WordPress upload directories. This suggests an attempt to lure users to potentially malicious content or phishing sites. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4986

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://keacg.com/upload/files/18554408364.pdf In PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bce8fecac55---28685062604.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d30141ac0d---kojofokukixalu.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094acb6a1f50---mulamilefajunabusu.pdfIn PDF document text
    • http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083c95532598---samexagefajofopomabofip.pdfIn PDF document text
    • https://qfuse.it/images/uploaded_files/ckfinder/files/1625607129_58015325c7.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160abe7111c2b5---36014300584.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16083e1ad5107a---61979117805.pdfIn PDF document text
    • http://laxycoffee.com/upload/files/mixitamura.pdfIn PDF document text
    • http://armanetti.com/images/wimelegobatitexonuxu.pdfIn PDF document text
    • http://aite-materials.com/upfiles/file/xagepaxebadazatugilut.pdfIn PDF document text
    • http://loca-granderoue-montaletang.com/ckfinder/userfiles/files/9644751465.pdfIn PDF document text
    • http://myrbacken.se/login/ckfinder/userfiles/files/befunipegekow.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d9e6b266601---70626729793.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6dc5a487e4---wibudifakadezinunamixofo.pdfIn PDF document text
    • http://distributoram.com/files/file/81082882259.pdfIn PDF document text
    • http://paillasse.hu/userfiles/file/53657404800.pdfIn PDF document text
    • http://technology-mp.it/userfiles/files/30728839159.pdfIn PDF document text
    • https://autonoleggioassereto.com/file/redebukapi.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/9jv02kscpicqq23c0234ukub5o/47451240278.pdfIn PDF document text
    • https://www.ojchamber.com/ckfinder/userfiles/files/48249931868.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/6abb643a57d1b5d3aad554925b7f05df/dokisa.pdfIn PDF document text
    • http://alltechsro.cz/files/88249074816.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/felifemuvanatubetimivu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=top+violinists+2020PDF link annotation

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