Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6b38e735bbbfae9…

MALICIOUS

PDF

66.0 KB Created: 2021-01-23 02:05:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5a93c606fa7e3d65639c4c2ee3164465 SHA-1: 762cf5f0bd250e123c90168dd4c58ea1fb86599c SHA-256: c6b38e735bbbfae98dd0e1f0a1c0aaf386b468d53024c146bda4923623d558f9
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains an embedded URL that directs users to a suspicious domain, likely for a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/123?utm_term=odea+giro+plus+manual PDF link annotation
    • https://cdn.sqhk.co/dodiniwotud/hbPvk33/get_in_shape_for_ski_season.pdfIn PDF document text
    • https://cdn.sqhk.co/kufusivekogo/iggdgdM/arcademics_games_meteor.pdfIn PDF document text
    • https://site-1176476.mozfiles.com/files/1176476/pokemon_battle_revolution_android_apk.pdfIn PDF document text
    • https://site-1172777.mozfiles.com/files/1172777/chemical_equation_balancer_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/pesuxitum/hbjfhiV/lupuzov.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/jh9pdjh/42253400952.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373271/normal_5ff0327c88470.pdfIn PDF document text
    • https://cdn.sqhk.co/fabunavaxa/iieo1LG/igp_manager_tips_tyres.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/lorifumofelu/hammer_guide_mhw_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/consumer_reports_best_tires.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/nadifilewiv.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/balance_sheet_format_of_companies_act_1956.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/google_forms_how_to_select_multiple_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/33021753475.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/iphone_x_alarm_sound.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/donez.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_off0000ba07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA07 5108 bytes
SHA-256: c5dd694202801e498f92a7b0d7105ed93d62b956785d80330641b9e3905d85b8
font_01_sfnt_off0000cb42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB42 9944 bytes
SHA-256: 5ba567b8a57f91fb4b0f817de63d8e9a3d7cbca87082a01533d632dbb872ffc9
font_02_sfnt_off0000ed27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED27 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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