Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ac1c61c4802bbfc…

MALICIOUS

PDF

84.7 KB Created: 2021-01-02 23:17:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e6162ec680a576b71709c03f804b291c SHA-1: 933c32fc660a07ded2b895630492e0d7ff0da282 SHA-256: 9ac1c61c4802bbfc1226ea93cbeab57707f8cbeba66aa90d9331b5c9fb05b99c
154 Risk Score

Malware Insights

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

This PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://traffmen.ru/aws?utm_term=peter+pan+e+wendy+pdf+ita' is likely used to redirect the user to a malicious site. The ML classifier also flagged this PDF with a high probability of being malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://traffmen.ru/aws?utm_term=peter+pan+e+wendy+pdf+ita In PDF document text
    • https://cdn.sqhk.co/jedelamodafa/ifYCOhf/best_free_offline_games_for_pc_windows_10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382793/normal_5faa228b70942.pdfIn PDF document text
    • https://cdn.sqhk.co/dodazija/t2wgHgd/maryland_civil_war_trails.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369908/normal_5f89296ea2bad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383807/normal_5fec6dadaed27.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474978/normal_5fce5e5aa408c.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/ghhdZhb/game_of_thrones_cast_season_6_episode_7.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/143cd985-84fe-417f-b422-ce7be19cc14b/abi_local_government.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/uci_stem_career_fair_2019.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_off00010f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F44 5020 bytes
SHA-256: df8664fed72f47ccfdb21a403e7ddc70dbf0e8d60ce5abcc442869df34858bf4
font_01_sfnt_off00012080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12080 11780 bytes
SHA-256: e10d19d1e5cb1a753bcdcbab8698ebb29c0995d5433342d9aa735756ab53a974