Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e9d0a56b56846e…

MALICIOUS

PDF

69.6 KB Created: 2021-05-28 17:30:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 826b56fd21313e0a74c19f4631f3d107 SHA-1: e734f40e7a8aeedf9b081769b2abb318e736562d SHA-256: 47e9d0a56b56846ee0c05366fbe87f06cb8b1b93445b6974dd7ac30566dbe53c
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious and phishing-related. It contains a large number of embedded external links, many pointing to potentially malicious or spam-related domains. The document body, though heavily obfuscated, contains text that appears to be a lure, and the file's metadata indicates it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • 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://bologen.ru/strik?utm_term=qu%2527allah+nous+guide+vers+le+droit+chemin+en+arabe PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410702/normal_606e685b07362.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413458/normal_60155590435fc.pdfIn PDF document text
    • https://musigimipipo.weebly.com/uploads/1/3/4/4/134470090/9803f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498330/normal_5ff430070050b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377116/normal_6062d059eefcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485454/normal_602c411b70c9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454668/normal_603e8823ea922.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465249/normal_606951f3d23b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373526/normal_5fd3366598c0e.pdfIn PDF document text
    • https://tapulebuzaxu.weebly.com/uploads/1/3/0/8/130814605/156970.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448547/normal_601f94857abac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421613/normal_60134b3da6066.pdfIn PDF document text
    • https://mesedegusi.weebly.com/uploads/1/3/4/6/134600151/0635bb485.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407810/normal_5fd259f0cab9c.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/ccb06e85-fbb5-4cec-9e2d-417569017928/bedasisaka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dba93185-c885-423a-8c97-f75e25624187/8603705438.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb33e39f-30b6-44ea-a4e7-3dc3827c7788/are_washer_pedestals_universal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/359a96b8-f50d-46b1-95c6-c6f6d9464743/13431858414.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67c99118-679f-4ca2-8c2c-36b2a44a7b03/how_to_start_an_indoor_soccer_facility.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63c347a2-b836-43c9-b58c-49d224585c88/47666511644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2122ec86-f60d-466c-ae0b-231b67175604/fajokunob.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_off0000ceb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB4 5648 bytes
SHA-256: 071dbcdfcdd84884243b3fa58f51f769aa23f892dd42d0657d806ebda92d3bdd
font_01_sfnt_off0000e1c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C8 11356 bytes
SHA-256: f0143cefc8877e61c076dbd76e9885d849e4741b8ea03ef4602babdb410715d8

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