Malicious PDF — malware analysis report

Static analysis result for SHA-256 e046d8d40ede6e87…

MALICIOUS

PDF

77.8 KB Created: 2021-04-08 07:11:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 5e594a8fe6cd02baf100bf3020d38d00 SHA-1: 53f4521041025f7197a926a42c15524b089aa658 SHA-256: e046d8d40ede6e87a52a2b533d99681d71bd14aabd98eb111709468267d70ab1
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The PDF contains a large number of external links, suggesting it is part of a link farm designed to direct users to malicious websites. The primary URL identified is likely the initial lure for this campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/strik?utm_term=what+are+the+seven+most+deadly+sins PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455403/normal_6022c9642b516.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415739/normal_606ba8c0cbb01.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490534/normal_5fcecc105b567.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492259/normal_5ffda5008c01f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410952/normal_5ffe416137b8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374859/normal_60250de864a34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446944/normal_6045e2bbb65e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422136/normal_60109ae61c496.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447098/normal_6042236598e6e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372980/normal_5fc66b90202af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458413/normal_5fcb6f01ab46f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414679/normal_602589c2def31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419425/normal_6040790bdebc2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://627ea4a7-3f28-4bf3-8c99-6a9da7dacf48.filesusr.com/ugd/1970e2_5b799c35f789408dbeb68de3507b2144.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb64a8e3-a2ad-4d55-a087-5b13ec2b8a48/the_wild_sheep_chase_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/205c4bdd-6934-42b6-b5d7-5f1d00a98131/20599495487.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4de9ffe9-edca-40a5-b192-16a305ef38d7/duwusora.pdfIn PDF document text
    • https://5fdaa9e0-ad6d-443b-8779-beb8e45026dc.filesusr.com/ugd/05301a_70808ea7128d4b31a4db3b3f2166eb63.pdf?index=trueIn PDF document text
    • https://dc5983eb-04eb-4341-be6e-5f763cf8c8d0.filesusr.com/ugd/979c04_8eafe6e3495449849d902a467a12fd0a.pdf?index=trueIn PDF document text
    • https://651f5d5e-5f42-4fb0-8380-889764ca350f.filesusr.com/ugd/b2f7c1_6c0f3f024fca4eccb736c6b78e555642.pdf?index=trueIn 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_off0000f175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF175 5240 bytes
SHA-256: 952510f07748aa47aa362b65c2c2e9bf618752a80a44c413f0aabb887356ab48
font_01_sfnt_off0001032b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1032B 11336 bytes
SHA-256: aaec2df61f31d7d05904128042ebcffa11b88897d37da8b6f0787f1e5e999f3a

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