Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a63e2e0a6b4b786…

MALICIOUS

PDF

72.0 KB Created: 2020-12-24 14:20:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 974241bf3191f730d9204eaa67d2a5af SHA-1: dbee08aaad96f0301b887176369ab9489939644b SHA-256: 6a63e2e0a6b4b78688ea3ec7d6065fdd98802cd0a959c30e6cf2592ba846aca9
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a significant number pointing to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. One prominent URL, 'https://traffnew.ru/aws?utm_term=simple+vs+fractional+distillation+lab+report', is flagged as unknown reputation. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery.

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://traffnew.ru/aws?utm_term=simple+vs+fractional+distillation+lab+report PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486742/normal_5faf446d8dcca.pdfIn PDF document text
    • https://luvoseguz.weebly.com/uploads/1/3/4/6/134665560/pujuti_gevalufo_pevopen_gujogokuzewod.pdfIn PDF document text
    • https://jefogozadiz.weebly.com/uploads/1/3/4/0/134040800/ruvujotewusasurire.pdfIn PDF document text
    • https://fuwefepitebu.weebly.com/uploads/1/3/4/7/134709748/wejujisiwulajojex.pdfIn PDF document text
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/5bede4f1.pdfIn PDF document text
    • https://basedupapopulow.weebly.com/uploads/1/3/4/3/134344364/8966028.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wulagisi/the_blood_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/lost_in_translation_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/la_contes_denver_menu.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/bensenville_police_reports.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d605ebb2-83ed-4c52-955e-a0ceabcabf46/51256810470.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_off0000d9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D7 5604 bytes
SHA-256: d99bc1202c150b36818d27c1b659711230b834e7e629966419b15f82f0fb0970
font_01_sfnt_off0000ecce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCE 11424 bytes
SHA-256: f1fcf537eabdf467c4a6ab451b507cbb6344808583858ebd2c4cfb79f5ed8da3

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