Malicious PDF — malware analysis report

Static analysis result for SHA-256 32cfb65925a51772…

MALICIOUS

PDF

74.1 KB Created: 2021-03-10 22:01:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: b6d282e3c77abd7efd829fd249f7c1dc SHA-1: 877746bb37992b28d79974dae57abbe29a7507f7 SHA-256: 32cfb65925a517726f3fac7825d5a9ab549b581ecd223ac3aeadd3c311b4a4a5
116 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating it's a callback phishing lure. The embedded URL suggests a search query designed to trick users into seeking contact information for law enforcement, likely as a pretext for a scam. No scripts were extracted, but the PDF structure and embedded URI are indicative of a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/wb?keyword=how%20to%20contact%20nypd%20by%20email PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425235/normal_6044fce2a7b03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367642/normal_6014298b1d20a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408172/normal_600284dd4c274.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/ggLhhcn/momufaleridogigozemuzes.pdfIn PDF document text
    • https://cdn.sqhk.co/relaberof/8FNhgjj/65450125283.pdfIn PDF document text
    • https://cdn.sqhk.co/zimajigon/sgdEJgd/superstar_life_cheats_2020.pdfIn PDF document text
    • http://dupuladusudired.mypressonline.com/what_is_the_best_50_gallon_gas_water_heater.pdfIn PDF document text
    • https://cdn.sqhk.co/gudopokobipa/eiaAgd2/73464464717.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392453/normal_5ff9a6f553c4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492294/normal_5fd198974cbf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415518/normal_5fe6a3aea97cb.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/Ogimia6/bingo_card_generator_excel_1-_90.pdfIn PDF document text
    • https://cdn.sqhk.co/juwafajem/ggjjaIv/golf_orbit_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/vimexuda/jal4hjq/best_free_weather_radar_app_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/surofowudula/c5hihb7/new_alexandria_demolition_derby_2019_schedule.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377112/normal_6000a01b82155.pdfIn PDF document text
    • https://cdn.sqhk.co/gumoxixo/R2CAbmM/javojikireradupi.pdfIn PDF document text
    • https://cdn.sqhk.co/retobumoki/ZLaieuv/mit_application_portal_mba.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/dEjhggT/60008363508.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dojorunubi.myartsonline.com/zerugajowipatunobo.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_off0000e515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE515 5240 bytes
SHA-256: 13e30477ba72730566cbba7bed243a55ff72d953a7b504ee6e0f01842beb98cd
font_01_sfnt_off0000f6eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EB 10764 bytes
SHA-256: 57d7f2dd8ee9a51fcec243524fff6c3d00f458e3c76698fb4e762b49893a4e7c

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