Malicious PDF — malware analysis report

Static analysis result for SHA-256 883a0597b6007028…

MALICIOUS

PDF

63.8 KB Created: 2021-08-03 12:57:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: dd2bcc0df37cfc80561b57fbe13389ff SHA-1: c75f3496a57479b5ccca900bfe3b3c59f25e7447 SHA-256: 883a0597b60070289a535a1f8d90a5076b82238a6a63c235ed2b1afec0a975a7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7548

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 https://drafthe.ru/uplcv?utm_term=grde+headlamp+not+working PDF link annotation
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160c008189e0b6---xifujixumagagevunudeji.pdfIn PDF document text
    • http://guides2alpes.fr/uploads/file/44598957023.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/09c0b5d09410f3fbbac097c80ed81330/rivawagepokosifirimarake.pdfIn PDF document text
    • https://ntiverification.com/userfiles/file/guxerutizo.pdfIn PDF document text
    • http://ferramentabelleggia.it/public/file/47866340416.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acde3674c68---80292506306.pdfIn PDF document text
    • https://pima-alarms.rs/slicice/file/munelobemovo.pdfIn PDF document text
    • http://davidhammerstein.org/userfiles/file/78693530770.pdfIn PDF document text
    • http://hotelamadeustorino.com/userfiles/files/92095920860.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5705d826df---66525579856.pdfIn PDF document text
    • https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/742c183769186f638f2e28ba458c6b16/26476735519.pdfIn PDF document text
    • https://clinicscrm.com/img/files/1640442828.pdfIn PDF document text
    • https://www.ndgai.com/wp-content/plugins/super-forms/uploads/php/files/09qf9skrh54dk23qdq136vrnu6/48335270890.pdfIn PDF document text
    • https://bliznacite.com/files/ranax.pdfIn PDF document text
    • http://mgtofubbq.com/uploads/files/zawiga.pdfIn PDF document text
    • https://ambient-interier.cz/files/files/26365492753.pdfIn PDF document text
    • https://musikkursus.dk/userfiles/file/17466153741.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/f6t7v5nhie7bbalpq85croak2q/sidizebemojidi.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f87f067db3---vomosisexiniw.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/5e811b1d447fee4816af0f830af73651/tejofozarejanixagejo.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/56f45536928b496b6c0890f66d2349d2/85852416341.pdfIn PDF document text

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