Malicious PDF — malware analysis report

Static analysis result for SHA-256 e47d400c1acf7944…

MALICIOUS

PDF

77.9 KB Created: 2020-11-25 20:34:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d96b2399a31ee774f8234930028009cd SHA-1: 29005fd1e2fc3b63a0c3383cbc4cf7bfcd1bafe1 SHA-256: e47d400c1acf79442fac221adcbd1a4ab0d5b803af8b801cf9764b02a020960a
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, and one of the primary URLs is associated with a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites, potentially for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://traffnew.ru/strik?utm_term=book+of+mormon+study+guide+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460680/normal_5fa3335b8e8e6.pdfIn PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/pisukin-nejofigorakimab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420776/normal_5fab36c840b99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_5fb66618eac19.pdfIn PDF document text
    • https://bofunakepubosux.weebly.com/uploads/1/3/4/3/134371141/janowe.pdfIn PDF document text
    • https://vekejuritikoj.weebly.com/uploads/1/3/1/8/131857631/910391.pdfIn PDF document text
    • https://jerefukixuludew.weebly.com/uploads/1/3/4/6/134686450/750c1670ac8729.pdfIn PDF document text
    • https://vidapinuluselas.weebly.com/uploads/1/3/4/8/134865598/zowisixima.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/bd2152ed-034f-40ac-898f-47527fccf248/11220863228.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_off0000f5db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5DB 5332 bytes
SHA-256: 09dd4949790497cfe1bb63fe7bdcabdfdc4f6535b992265e947628182fea9b4b
font_01_sfnt_off00010804.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10804 10564 bytes
SHA-256: 235b5b09e7f3f87ce3226f5e34a26759e5bef0594e43d373fb4f7dcf3c109357