Malicious PDF — malware analysis report

Static analysis result for SHA-256 642156dba9556e39…

MALICIOUS

PDF

67.3 KB Created: 2020-12-17 20:58:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9edf99966593b64cdd307fabe656bad7 SHA-1: badf94f1d357b974a954f461b653bc442a5740c0 SHA-256: 642156dba9556e39b160a166aca83991ef1865c9c38a25a04974b44048f07313
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'ggtraff.ru'. This URL is likely used to host phishing content or distribute further malware. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of a malicious redirector suggests an attempt to trick the user into navigating to a harmful site, consistent with spearphishing.

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://ggtraff.ru/strik?utm_term=ffxiv+time+card+30+day In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375088/normal_5fa596c3bd1af.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/xufaxoferugod/78492492837.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/keurig_k-_compact_use_and_care_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/potsdam_ny_movie_theater_showtimes.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/1790871205.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/gibenozidiw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd029c8bc8713fe6fe7c32/1606222492887/sizes_of_rooms.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e60b24b06a7eb3ff207b/t/5fc12314f3de5e49b58d06ba/1606492949370/r_vs_s_organic_chemistry.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0ddc68bfc518616a3e70/1606225374518/wiwusum.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/massolution_crowdfunding_industry_report_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/63268115011.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/regorelu.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9CA 5448 bytes
SHA-256: 9eb5111b86da7cf23ec2996f2bd106b5bb5c3dd14ff856b2660995b377091f3c
font_01_sfnt_off0000dc54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC54 10748 bytes
SHA-256: 56355a52dfee31a214d18ea21b6cffc0485223963c31fdb7f8371c168c151c35

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