Malicious PDF — malware analysis report

Static analysis result for SHA-256 de0cbc2d2e8dd595…

MALICIOUS

PDF

65.1 KB Created: 2021-06-06 09:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 062def7574049aa6c2735a5fd1c65129 SHA-1: 4ce45def90297230a17465925955769314d46492 SHA-256: de0cbc2d2e8dd5958905d05ac3f936d692b6503c2f91b36db41afdeff59cacf1
184 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9010

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/pbw?utm_term=install+rockford+fosgate+p300 PDF link annotation
    • https://berajuvexoru.weebly.com/uploads/1/3/1/8/131860787/lukulafo.pdfIn PDF document text
    • https://wojodusu.weebly.com/uploads/1/3/2/8/132815854/7941718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474752/normal_6058ca70a8a96.pdfIn PDF document text
    • https://dapijapivabug.weebly.com/uploads/1/3/4/3/134338952/fosegenijag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420745/normal_6008a552943db.pdfIn PDF document text
    • https://vebexedupatad.weebly.com/uploads/1/3/2/7/132740253/1143567.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454550/normal_60445a152efb5.pdfIn PDF document text
    • https://newimogo.weebly.com/uploads/1/3/1/0/131070302/0c94d5c377fee1.pdfIn PDF document text
    • https://fometixivoros.weebly.com/uploads/1/3/1/6/131637143/nedenexomon-kisirisud-totajuz.pdfIn PDF document text
    • https://judaromoperojog.weebly.com/uploads/1/3/2/6/132681758/8126957.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/836843.pdfIn PDF document text
    • https://zulozuger.weebly.com/uploads/1/3/5/3/135310252/56da3e3107660a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369632/normal_606ccae8cf26b.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f9f2545-0b59-4c2d-8ad7-041f4329a0c4/birawukejekebexitevogin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe77df38-4c61-4136-9655-4d7bd5874673/87734121055.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1bb0a4a-aa21-4af9-b244-033857fb3be7/expanded_noun_phrases_year_3_worksheet_tes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/102576c1-8d0d-48a2-b307-ed847dc9a3c1/monot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33f293a9-64aa-4800-a0c4-1203d982f3fa/zebra_gk420_label_software.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b937fab4-33d2-4078-af4a-bc2a9d9af7d9/nekuzu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47b7d2b2-fc20-4768-916f-195769bc92fc/gogos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86352eb2-b729-44e0-bc7b-028454481d08/pogil_answer_key_chemistry_coulombic_attraction.pdfIn PDF document text