Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc7262234221fb9…

MALICIOUS

PDF

104.0 KB Created: 2021-01-12 11:41:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cef13a9fdc0049ab51c7d8ba193b81af SHA-1: eccca7329abc45672da453a006e8dd4e25d358b0 SHA-256: 2fc7262234221fb90761ce103f9445c4bf7d76f4e7daf54a9fa13ab7214dd46c
204 Risk Score

Malware Insights

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

This PDF file was detected as malicious by multiple heuristics, including a critical alert for a malicious redirector link and ClamAV detection. The embedded link points to `https://gettraff.ru/123?utm_term=rebecca+garcia+chapter+13+trustee`, which is identified as a known malicious redirector. The document also exhibits characteristics of a callback phishing lure, suggesting an attempt to deceive users into contacting a malicious entity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/123?utm_term=rebecca+garcia+chapter+13+trustee
    • https://cdn.sqhk.co/zanaforare/8jajghf/70073733613.pdf
    • https://site-1238523.mozfiles.com/files/1238523/2010_chevy_malibu_fuse_manual.pdf
    • https://cdn-cms.f-static.net/uploads/4489050/normal_5fab1a8abdbaf.pdf
    • https://cdn.sqhk.co/xivumatozo/SVjestg/wabimuver.pdf
    • https://cdn.sqhk.co/sofetarunox/d4VJgfD/grand_truck_simulator.pdf
    • https://cdn.sqhk.co/nujudemugipi/JL2pvhj/khloe_kardashian_new_look_and_old_look.pdf
    • https://static.s123-cdn-static.com/uploads/4496812/normal_5fce80200180f.pdf
    • https://site-1176319.mozfiles.com/files/1176319/zed_counters_op__gg.pdf
    • https://cdn-cms.f-static.net/uploads/4420907/normal_5f982b06bb683.pdf
    • https://site-1168006.mozfiles.com/files/1168006/idle_master_chef_tycoon_new_restaurant_games_download.pdf
    • https://site-1172900.mozfiles.com/files/1172900/40226994195.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pirofopafu/anjali_anjali_pushpanjali_telugu_song.pdf
    • https://s3.amazonaws.com/vazisi/53561748971.pdf
    • https://s3.amazonaws.com/vonusirukete/colon_cancer_guidelines_2017.pdf
    • https://s3.amazonaws.com/fifuto/good_bye_baby_song.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_off00014d01.bin
be8bab5ba91ebc1a80011aee26f33bc2c73cf073532b8919cef8f95473faf029		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14D01 5528 bytes
font_01_sfnt_off00015fd0.bin
cacf5f19d3aa91b6ede620bf634742034bc998f18530f9816f0a8f462dca6d09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15FD0 16332 bytes

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