Malicious PDF — malware analysis report

Static analysis result for SHA-256 2647470ad3ee347d…

MALICIOUS

PDF

80.4 KB Created: 2020-12-04 19:46:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b6910116f2012d044b6763ad8b2ce374 SHA-1: 232ae3e51d481010f9a403be4629fa1f002ca3b5 SHA-256: 2647470ad3ee347d72183ec1314402c6d204f4fc5b19df73a41a5bcdca4b4d05
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The document contains heuristics indicating it is a phishing lure, specifically requesting sensitive recovery information. It also embeds external URLs, one of which is associated with a known malicious domain. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to direct the user to a malicious site for credential harvesting.

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
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://traffking.ru/strik?utm_term=how+to+sign+an+apk+without+android+studio PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484636/normal_5fb711bf54123.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454040/normal_5fc1393b7fee0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485809/normal_5fa9c7eb629a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369775/normal_5f9c96336e48d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369138/normal_5fbafbd901f13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417999/normal_5fa4455fd9b3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384318/normal_5f8c44065c3a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388813/normal_5fba8663d53d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380539/normal_5f8ac2e44d378.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375525/normal_5fbaf76696ce1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380090/normal_5fa1e6bf26483.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf65937acac6192ab90066/1606378900169/fermented_spider_eye_minecraft.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d3acc6229360ecc6007a/t/5fc7c2093d56556d144a457e/1606926857330/refijud.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fb6b88c99b6d37a78a63/t/5fc13932cb3e0f57717bedbf/1606498610773/48590855382.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c00daf61-c324-4412-9e91-7e5e90b20963/7422278268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/824dae49-1f76-4cf3-8202-3722dde0838e/lonivopuna.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_off0000fb28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB28 5304 bytes
SHA-256: e8d298cf49f876b94d9599c38c7e5bc28ef0c291eb4fc2194cdab3a3e90c52b4
font_01_sfnt_off00010d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D3F 11392 bytes
SHA-256: 594a6e57067f82416f8d6e967d6cdaaf32397a6bbaa522c289383fb3a4a2ac1f

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