Malicious PDF — malware analysis report

Static analysis result for SHA-256 0396f752d6756ac6…

MALICIOUS

PDF

70.6 KB Created: 2020-11-26 23:34:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: d1a8d9a1167c998cbaa8594b52ee13e3 SHA-1: 3d811ae17917005b75264031ba5f1449d68e6324 SHA-256: 0396f752d6756ac6fca79da6107d64a37f8891e02a9b9fa4414d6ec30ee7d063
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing attempt and hosts a large number of external links, many of which are likely part of a link farm. The embedded URL 'https://traffset.ru/aws?utm_term=pet-+insurance+claim+form' suggests a lure related to insurance claims. While no scripts were directly extracted, the PDF structure and the presence of numerous external links point towards a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/aws?utm_term=pet-+insurance+claim+form PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461485/normal_5fb032c106d49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367294/normal_5f874912c405e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_5fb02fd1422a0.pdfIn PDF document text
    • https://vofixerexelisat.weebly.com/uploads/1/3/4/3/134311693/758364.pdfIn PDF document text
    • https://fatononatigomun.weebly.com/uploads/1/3/4/8/134846471/digipegit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378164/normal_5f8f0671ea839.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387821/normal_5fb9b74e58513.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370528/normal_5fac5f6d29b83.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/797da35b-0e11-4a70-9ef7-0de798593af1/playmobil_remote_control_pirate_ship.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee2c7576-303a-449e-8662-7b08998eb0ee/2587726274.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/air_pollution_causes_effects_and_prevention.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/is_1001_free_fonts_safe_to_use.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70579094-aab7-400b-827f-8541c854cd36/boxopiwufuxided.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_off0000d814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD814 5060 bytes
SHA-256: f7538715f87bda1ee49a8b760326b2868d54d13e250f39e24dfbc758ac8e05ea
font_01_sfnt_off0000e93c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93C 10672 bytes
SHA-256: ea108109f1d5a8e61243c572f354834857024cb69cc487aebe34a9396c93b92f

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