Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cc1fb8dbec0f27b…

MALICIOUS

PDF

74.0 KB Created: 2020-12-21 00:36:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a2337af60f89762421d229df0bc57f3 SHA-1: d36208753042ea87fc2ca5ed485077102fab0636 SHA-256: 0cc1fb8dbec0f27b1392e6d289b661a2e8369254953430b8ad3b111274a773f1
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains a malicious link disguised as a 'well pump manual'. Heuristics indicate it's a redirector to known malicious infrastructure and a callback phishing lure. The ML classifier strongly flagged it as malicious. The primary IOC is the embedded URL which likely leads to a phishing or malware download page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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=everbilt+shallow+well+pump+manual
    • https://sowozulame.weebly.com/uploads/1/3/4/7/134733070/xufoxupimekubo_fugoremeketoz_xutagapoxo_wozutanewixor.pdf
    • https://sebonegipuwi.weebly.com/uploads/1/3/4/1/134108682/lavamer.pdf
    • https://cdn-cms.f-static.net/uploads/4475847/normal_5fb6bdccd139b.pdf
    • https://cdn-cms.f-static.net/uploads/4387713/normal_5fb544a623f54.pdf
    • https://zulukewawebipu.weebly.com/uploads/1/3/4/7/134745728/ea5607a93d1d2a0.pdf
    • https://cdn-cms.f-static.net/uploads/4483103/normal_5fad80b24c6ea.pdf
    • https://xomowapiwaliv.weebly.com/uploads/1/3/4/0/134000086/c4db8a.pdf
    • https://cdn-cms.f-static.net/uploads/4378171/normal_5f8bab84027c3.pdf
    • https://venatijaw.weebly.com/uploads/1/3/4/6/134680547/7c83454657.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc78d8be9133927d90f7fcb/t/5fcde4e02bc7884852d7f1a1/1607328993294/rovojopof.pdf
    • https://static1.squarespace.com/static/5fc4c46cc89e1c4b8fd75f72/t/5fcd657f5d2e6f3bda4fe320/1607296383934/jio_digital_ringtone_mp3_download.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfb1cedabee7b440753bc/1606220573291/22308113489.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_off0000e24c.bin
5de382c5ed0a62d80a94f39142faf49df6e6192bdd8b7e7c701ec33ceb38dc7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE24C 5308 bytes
font_01_sfnt_off0000f441.bin
c3f98e117196f83297ebba0cb87a17f994c8a96ae04a36ebdfc3d5e6a8d28971		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF441 12016 bytes

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