Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a2b251f2918edc5…

MALICIOUS

PDF

75.6 KB Created: 2021-03-02 15:18:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ed667317a9ecb1fb05a26373646e38e SHA-1: 481a5fdfa59fc077ea1e2578eacb2f1cff5b3cdd SHA-256: 9a2b251f2918edc5f43ed127f31b4a828ebed8cbdb391c3d05865ee3ebed0b8d
146 Risk Score

Malware Insights

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

This PDF document was flagged by ClamAV as Pdf.Phishing.Trojan and exhibits characteristics of a callback phishing lure, suggesting users are prompted to call a number or visit a URL in a deceptive context. The presence of multiple external URIs, including one that appears to be a redirector with a search term, indicates an attempt to lead the user to malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://seumenha.ru/strik?utm_term=how+much+is+ps+vita+slim+in+nigeria
    • http://aycotoro0.xyz/vupikowifiruje938xu.pdf
    • https://cdn.sqhk.co/natokaze/jqhi4Xn/kroger_weekly_ads_longview_tx.pdf
    • https://cdn-cms.f-static.net/uploads/4420775/normal_603764f31c7ed.pdf
    • http://moxegelubopidi.sportsontheweb.net/dawasitaliwejadutasuletal.pdf
    • https://static.s123-cdn-static.com/uploads/4366034/normal_6008b7a135dce.pdf
    • https://static.s123-cdn-static.com/uploads/4385014/normal_5ffe188da3bc2.pdf
    • https://cdn-cms.f-static.net/uploads/4408464/normal_603754a09a270.pdf
    • https://cdn-cms.f-static.net/uploads/4460677/normal_6033bc47450db.pdf
    • http://procripton.com/ancient_greece_map_labeled_cities18gcr.pdf
    • http://nanonewe.scienceontheweb.net/petowaropigipotalipizuv.pdf
    • https://cdn.sqhk.co/goworonol/qCPWgin/do_platy_fish_give_live_birth.pdf
    • https://cdn-cms.f-static.net/uploads/4419211/normal_602e6a9bdf606.pdf
    • http://interstart.online/760419376310q264.pdf
    • https://cdn-cms.f-static.net/uploads/4389106/normal_60364bd817b5f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000e7ca.bin
7a50788910e80b3ddb7617b7d422d88bfcdfe398d33a1459cb0509bfd5e15f79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CA 5460 bytes
font_01_sfnt_off0000fa51.bin
fade7ea0ed4b42c3c7de0510b7cb96c4e5ddddfcd494c96bdc3dd8957691a706		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA51 11620 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.