Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5cf88830e70e7e…

MALICIOUS

PDF

95.3 KB Created: 2021-02-12 04:12:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 57acb81668f4451d5bcd8c673523f68b SHA-1: b06f80ba861a007d18f7b368bd7a035e54245f22 SHA-256: 9d5cf88830e70e7ed25d49531ce66ad159c19314c52ed245c533850e297f787e
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

The sample is a PDF document flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to trick users into calling a phone number, consistent with callback phishing or tech-support scams. The embedded URL points to a domain that appears to be part of this phishing scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://baarspo.ru/wix?keyword=royal+bank+of+scotland+annual+report PDF link annotation
    • https://cdn.sqhk.co/nezerozara/hgPjcEB/ga_dead_tours_twd_locations_map.pdfIn PDF document text
    • https://cdn.sqhk.co/zixemoliz/jfrfB9J/great_white_shark_sightings_world_map.pdfIn PDF document text
    • https://cdn.sqhk.co/pibilebomek/igifpyr/university_of_miami_football_practice_field.pdfIn PDF document text
    • http://the-glow.ru/54164778745rimt6.pdfIn PDF document text
    • https://cdn.sqhk.co/lesepivir/jfggWgc/fallout_76_pioneer_scout_archery_test.pdfIn PDF document text
    • https://cdn.sqhk.co/benanejufa/hjihhTz/55655059592.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486563/normal_5fe9da37765a7.pdfIn PDF document text
    • https://cdn.sqhk.co/gabadifofibo/gjibgbg/fun_race_3d_game_online_play_free.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/jbR0hgH/strikers_1945_world_war_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/wajerewuwer/gdhhA7g/81148630648.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/cLhhjat/80418454987.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/rodiligarexo/zapib.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_off00012b0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B0F 5296 bytes
SHA-256: 03f645381208784fdc301e27f1979b0fd06c27d8dc45aedff8ffaf9182225d61
font_01_sfnt_off00013d21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D21 10872 bytes
SHA-256: 794ec4998c5ce6c6b648f59f8ab06b0962088b1634a686dd03e8747cb4295ee7
font_02_sfnt_off000161ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161EE 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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