Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce054518127254fb…

MALICIOUS

PDF

87.0 KB Created: 2021-05-16 13:31:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 4486b62d3a41c8525968921146514310 SHA-1: 03e4e3916fb3329ba6781d2de70bc857eb100021 SHA-256: ce054518127254fbdfbdd64ae66b56fcb1ec3da90edc31cfc4f4b2eb677c5982
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

The sample was flagged by a machine learning classifier and ClamAV as malicious. It displays a fake CAPTCHA, a common social engineering tactic to trick users into clicking malicious links or downloading further payloads. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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://xezojetit.ru/strik?utm_term=the+great+depression+causes+and+effects+quizlet PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367646/normal_6003cfaade5aa.pdfIn PDF document text
    • http://tumbochka.space/68388126072csg9n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413585/normal_5fcfb52888b31.pdfIn PDF document text
    • http://otshelnik.net/11179549839xfoic.pdfIn PDF document text
    • http://blue-tick-central.com/fefefedijokibmbdl.pdfIn PDF document text
    • http://creamwalls.online/where_is_subtitles_on_samsung_remotexfzpa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451230/normal_606e7b9840922.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377717/normal_601487c50b7e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412181/normal_602fe1522b1b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369909/normal_605d66ab4fa5d.pdfIn PDF document text
    • http://zasazigupat.getenjoyment.net/fetosogikakido.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483083/normal_5fc7507da8446.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369166/normal_600e4c0a5af28.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fufudaloxola.onlinewebshop.net/taxujid.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/msi_n1996_motherboard_vga_drivers_for_windows_7_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/arijit_singh_pachtaoge_song_pagalworld.pdfIn PDF document text
    • http://tosipasakuvil.myartsonline.com/51519968429.pdfIn PDF document text
    • http://bokepomi.onlinewebshop.net/pebutemefuxofixuveto.pdfIn PDF document text
    • http://tososite.onlinewebshop.net/entwined_in_you_download.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/lab_equipment_list_template.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/28248320310.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/kilowatudawuduxuvexawaf.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_off00011486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11486 5544 bytes
SHA-256: 9e7ec947c4c48285d487417d24123c53fbe70077f410c8606306e236f638c220
font_01_sfnt_off00012761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12761 11456 bytes
SHA-256: 510087ca8ea9f3360d09c31db4962dea8689e04c842cd9402242c396bd2e2258

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