Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be2183232900584…

MALICIOUS

PDF

72.7 KB Created: 2021-05-12 13:47:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: e44a03bb49dba2c291fa7450e8fc7d52 SHA-1: a7c8aacd074eb83edcda2fcf568ffdfae97e19c7 SHA-256: 1be2183232900584e9d4bb51de816aadc965571eebc25c114542d7e343e987de
176 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious and likely phishing-related. It contains a large number of external links, with one prominent URL pointing to 'pelibifir.ru', suggesting a phishing or malware distribution attempt. The document body, though partially obfuscated, contains text related to resetting a Tracfone, a common lure for technical support scams or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://pelibifir.ru/strik?utm_term=how+do+you+reset+a+locked+tracfone PDF link annotation
    • https://cdn.sqhk.co/mudebijutene/uQgf6id/advance_auto_parts_jacksonville.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/tJjdhaS/octopus_watching_tv.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/xjct0kE/6661868158.pdfIn PDF document text
    • https://cdn.sqhk.co/duzimisese/hbJ8pbQ/horizon_camera_app_alternative.pdfIn PDF document text
    • https://cdn.sqhk.co/purilusevike/ioO6Vgh/35452625067.pdfIn PDF document text
    • https://cdn.sqhk.co/tezizejaropu/bBfsRhe/best_mazesoba_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/wibononuve/aihjgig/sling_blade_gif_sound.pdfIn PDF document text
    • https://cdn.sqhk.co/vutexexukus/gdQspCG/best_coffee_cake_recipe_using_buttermilk.pdfIn PDF document text
    • https://cdn.sqhk.co/pinebiven/iQ5jcii/jekibosobe.pdfIn PDF document text
    • https://cdn.sqhk.co/dimumaneda/eNhhZL7/16250220517.pdfIn PDF document text
    • https://cdn.sqhk.co/givilegom/gi8phgv/caanz_cpd_template.pdfIn PDF document text
    • https://cdn.sqhk.co/pemiduwegam/Zifgghb/little_piggy_bank_song.pdfIn PDF document text
    • https://cdn.sqhk.co/woselukafo/hbhjThd/courier_services_near_me_open_today.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://882e4f53-a7e1-4d4a-89e8-a6e6d9f9b805.filesusr.com/ugd/9a13d2_70d5f46d253a4ba0b5b53a73c5bc4b7e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/819adaaa-dff0-45b7-b5dd-15720e66cf82/yard_machine_riding_lawn_mower_deck_belt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/162d7fba-f459-4e73-bead-8a97c97bf439/pulotiselogikedadorojilik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59fd8f78-90fc-4e98-b93a-3342ad913ab0/the_lake_house_2006_explained.pdfIn PDF document text
    • https://b8e64ff8-a522-4625-8e91-70fe47930cb2.filesusr.com/ugd/37987b_6aed61c9af184deb88551cb0af206b4f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9d4eb0d-f389-4e57-8695-2cb61c8c2be0/hp_photosmart_6510_printer_cartridges.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de27a78e-5125-4258-b05d-471e1e75df4d/45355107257.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_off0000e11a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11A 5236 bytes
SHA-256: aaad0cd3aec24db952698123622b719ce790712fa14d5241d2a93f7fb1f43929
font_01_sfnt_off0000f310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF310 10136 bytes
SHA-256: 0c3bfe72e8a9f1cbfbd19460eab9e4a32f0c6d02244edbb79b932f92813cd107

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