Malicious PDF — malware analysis report

Static analysis result for SHA-256 87e56e64d2d9407e…

MALICIOUS

PDF

62.5 KB Created: 2021-01-03 19:07:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf3f72578076e9054e70dce696d0118b SHA-1: 5d6f0308710429de2af99d0a9dedd0cdd9151e79 SHA-256: 87e56e64d2d9407e5601f012b00631c100ec889aee0f6cf2797f1ba939f90f92
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL, https://cctraff.ru/123?utm_term=x+plane+fms+manual, is the primary indicator of a phishing or redirection attempt, likely designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cctraff.ru/123?utm_term=x+plane+fms+manual
    • https://cdn.sqhk.co/nonuripot/cpig7Rb/77798830825.pdf
    • https://cdn.sqhk.co/waximanodif/uSwgfgd/gadavebigu.pdf
    • https://cdn.sqhk.co/wireriduwude/Ys058m7/talking_friends_app.pdf
    • https://static.s123-cdn-static.com/uploads/4369499/normal_5fc9a7bc28bb9.pdf
    • https://cdn.sqhk.co/kurotevu/6jdFn35/descargar_dragon_mounts_mod_para_minecraft_pe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pozokimepe/hotpoint_tumble_dryer_repair_manual.pdf
    • https://s3.amazonaws.com/gezetega/30244350311.pdf
    • https://s3.amazonaws.com/wexukufedepim/duct_leakage_test_report.pdf
    • https://s3.amazonaws.com/fodose/89211117837.pdf
    • https://s3.amazonaws.com/megelugik/liravidebovugelizuvibus.pdf
    • https://s3.amazonaws.com/dadupawo/peter_rabbit_full_movie_free_online_123movies.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b97a.bin
46a01f6309ccf1f6df8e821cc58ddf71772dc4c4cfd3eb1593251fd150ea501f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB97A 4928 bytes
font_01_sfnt_off0000ca34.bin
6f59a605ee87bb2342e9168035d5987fc1d466b33b621be8442a64de0583aa6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA34 10448 bytes

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