Malicious PDF — malware analysis report

Static analysis result for SHA-256 11a02c994ba7141f…

MALICIOUS

PDF

81.2 KB Created: 2021-04-17 17:07:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: c86a9653ee245446e3c41eecf79c1d61 SHA-1: 02371708f0cb99799554725e6f3e6c247503a283 SHA-256: 11a02c994ba7141f9cf4a92e36822b0744fb9e385117db8378c90dbc48a05a7f
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate maliciousness. Although no scripts were explicitly extracted, the presence of external URIs and the overall context suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/strik?utm_term=what+is+the+boy+scouts+of+america+motto PDF link annotation
    • http://future-techno.ru/arduino_ide_for_ubuntu_using_terminalkcf0k.pdfIn PDF document text
    • https://cdn.sqhk.co/govonesed/heiNEib/nirapujevadapukimebapir.pdfIn PDF document text
    • https://cdn.sqhk.co/firokizita/efgjX91/how_to_bake_pumpkin_seeds_ranch.pdfIn PDF document text
    • https://cdn.sqhk.co/wedifedaguju/jhgejht/the_joker_hd_pictures.pdfIn PDF document text
    • http://latuha.com/ansible_dry_run_template6y80l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417664/normal_601fc9c3a40f8.pdfIn PDF document text
    • https://cdn.sqhk.co/bezedono/qih5iiU/vanawetewukofavenemujali.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393506/normal_602c3eb050d5c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378386/normal_5ffe603653669.pdfIn PDF document text
    • http://zujewubowufonug.scienceontheweb.net/lm3886_amplifier_circuit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456143/normal_600e6d9f93632.pdfIn PDF document text
    • http://korefubelexusiz.medianewsonline.com/effects_of_stress_on_the_human_body.pdfIn PDF document text
    • https://cdn.sqhk.co/jaziwuke/jbgchgT/ruzomob.pdfIn PDF document text
    • http://drenajkrasnodar.ru/95613206354ln48v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420588/normal_60582e0940431.pdfIn PDF document text
    • http://kungfumalibu.com/zejuweforudagobenuxunowefzxy10.pdfIn PDF document text
    • http://lastasked.com/sixisuvujemopibopaunpkg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mejados/7620952139.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/59412368070.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c7e257a-b7c4-4943-bed8-e8538908d676/boss_tu-2_bypass.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/chase_online_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51621045-36c3-4877-8891-675d8627848b/guwunoditeburirutibomudoj.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/xapetojuwip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b555bcab-258c-4e53-988c-17f3c69c1c41/life_fitness_ic4_indoor_cycle_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f10c9ccf-4624-474b-a4cb-6d07b43cb72b/learn_how_to_read_spanish_tarot_cards.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/barawuvaliga.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A2 5120 bytes
SHA-256: 6c3b99f6d94cea2084b4b1655d1ca7e8e9f87cd70738bb0fd550dfe3065f22b0
font_01_sfnt_off0001031c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1031C 10916 bytes
SHA-256: a598954e75a9411e91f19a2c9b489dc509b0ddfcb255ba638fa5221c70f6b06c
font_02_sfnt_off0001285c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1285C 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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