Malicious PDF — malware analysis report

Static analysis result for SHA-256 c35960174cb3109e…

MALICIOUS

PDF

73.3 KB Created: 2021-01-13 14:49:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 472082feb3a654a6ae11afff4e9d3bbe SHA-1: 0e1a505588ba679106e08aa069d3718999fa79d5 SHA-256: c35960174cb3109ee0318db7edc9727d78a8ccdf855a5cc58f7d2a8883e0f1f6
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=bikaner+full+hd+video+song'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?utm_term=bikaner+full+hd+video+song In PDF document text
    • https://site-1171827.mozfiles.com/files/1171827/invasion_zombie_minecraft_animation_movie.pdfIn PDF document text
    • https://site-1171722.mozfiles.com/files/1171722/munul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403417/normal_5fdc351cd510c.pdfIn PDF document text
    • https://cdn.sqhk.co/sifajoxojif/hdhshbW/93057106473.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476294/normal_5ff2d639f4137.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417414/normal_5fe7db7734f17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374979/normal_5fc304c4e175b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407064/normal_5ff757412350a.pdfIn PDF document text
    • https://site-1173424.mozfiles.com/files/1173424/27675533551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446507/normal_5fb9b7d012fc9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491155/normal_5ff773f761924.pdfIn PDF document text
    • https://site-1173205.mozfiles.com/files/1173205/88187551213.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451047/normal_5fe6e9b32e3c8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE304 5344 bytes
SHA-256: ce4878dfa55e168326bac42d139ada3eadf9aeb0a92648db253a64ca9adc6426
font_01_sfnt_off0000f538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF538 10272 bytes
SHA-256: 305c8a3fa1d45061219460aee78ccc12e85d0be96b2aeedf96d921723088035d

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