Malicious PDF — malware analysis report

Static analysis result for SHA-256 22dcd0d4c7fa0927…

MALICIOUS

PDF

90.5 KB Created: 2021-05-28 05:40:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 0361de19074eff57f39c93f72301baee SHA-1: 78de28915f392b7ed740ab1017023fa09d16e9a5 SHA-256: 22dcd0d4c7fa0927b94f9cc7412f558df7b7a218d50822f67ae313a7c318b7ca
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains a large number of external links, many pointing to PDFs, suggesting a link farm or redirection mechanism. One primary URL, https://soxebez.ru/strik?utm_term=telecharger+attestation+employeur+destin%25C3%25A9e+%25C3%25A0+pole+emploi, appears to be part of a phishing lure related to employment verification. No scripts were extracted, but the PDF structure and numerous external links are indicative of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://soxebez.ru/strik?utm_term=telecharger+attestation+employeur+destin%25C3%25A9e+%25C3%25A0+pole+emploi PDF link annotation
    • https://tumirovuwepilu.weebly.com/uploads/1/3/4/6/134603677/davafa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485800/normal_6016d6f7aceef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366653/normal_6064af69ecdf8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418566/normal_5fd652f4d37a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413846/normal_605c9773e4fc5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461516/normal_5ff0f5350c88e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412763/normal_5fd086769389b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391903/normal_602018ba5083c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412415/normal_6012a38d94723.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4452161/normal_60aff6058fd5f.pdfIn PDF document text
    • https://nozodipipagim.weebly.com/uploads/1/3/1/4/131438171/lobepa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370737/normal_605c8afb30450.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382421/normal_606a1b1474ce0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee6de00e-04d1-4c0c-98f3-96348ccac329/ginomofafefivigur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ec96867-c825-478a-bbe2-c49b2e7c3be7/wukutajobudabujubux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fbe4e78-28ae-4830-ae57-88984a0f82f8/38285110887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0d58a87-b42e-4597-afb4-29a03b65edf7/81081022826.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97df8b1d-77eb-4d12-83de-8247f1a63f81/76137818132.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1396334c-3006-4c8e-860e-3b901cbbca39/buginisidigexof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79e2de56-c5e4-4f5f-8073-a4131000cd22/how_to_design_a_gravel_road.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011cd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD4 5912 bytes
SHA-256: db720f4eb4bd396794cdb893cb8633d2d07c3370cfdd1679897d5088378f10a8
font_01_sfnt_off00012ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FF5 13440 bytes
SHA-256: 4c0d7a3153acc5155abf26562145c02c25f1034a24e0f1a3f36433e2b860a054

Open this report in the interactive analyzer, or submit your own file for analysis.