Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bc784dc74cbf32e…

MALICIOUS

PDF

73.9 KB Created: 2020-12-29 20:45:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd623c932d77b76882eff7c8c92e9823 SHA-1: 1b34301763caf87faa4a4b96c621d1350a591e03 SHA-256: 9bc784dc74cbf32ea44b52e017d7c9312ba67653a01be685ff3862358b2b6e21
182 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is a strong indicator of malicious intent. The presence of urgency and callback lures further supports a phishing or scamming objective. While no scripts were extracted, the ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely serving as a lure to a phishing or malware distribution site.

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ggtraff.ru/strik?utm_term=stokke+tripp+trapp+tray+size
    • https://cdn.sqhk.co/bulenupulabo/hv6sQgg/12903264054.pdf
    • https://cdn.sqhk.co/diratukuz/J8Tujbc/tupujanenurulit.pdf
    • https://cdn.sqhk.co/zuvomafoda/fKijihi/upcoming_vr_games_2020_ps4.pdf
    • https://cdn-cms.f-static.net/uploads/4488581/normal_5fd6751269eb3.pdf
    • https://cdn-cms.f-static.net/uploads/4483331/normal_5fd8b396db31e.pdf
    • https://cdn-cms.f-static.net/uploads/4369904/normal_5faf59a9b6d75.pdf
    • https://cdn-cms.f-static.net/uploads/4383295/normal_5fa7df8b0f43d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fazujo/materialismo_cientifico.pdf
    • https://s3.amazonaws.com/regovadeje/arduino_uno_caracteristicas.pdf
    • https://s3.amazonaws.com/mozedijiz/pneumatic_solenoid_valves.pdf
    • https://uploads.strikinglycdn.com/files/a42e85fb-96a3-447e-98e9-f3064c3ea223/managerial_accounting_solution_manual_chapter_3.pdf
    • https://s3.amazonaws.com/gogonof/82205113694.pdf
    • https://uploads.strikinglycdn.com/files/08219612-8c25-488d-8b3d-e6384cad2848/oyster_mushroom_spawn_amazon.pdf
    • https://s3.amazonaws.com/dumupa/bill_nye_weather_and_climate_worksheet.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_off0000df2a.bin
a29d15b4428c159574d9c250cd72b334ce212ab082a56efe1b544ec8521e1baf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2A 5100 bytes
font_01_sfnt_off0000f0a1.bin
a8ffca9c948dd3102fcbe96d82c9c7a37da3f70eaa63d1664d21ad2de3c46114		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A1 12040 bytes

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