Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d43f972cd5a6d57…

MALICIOUS

PDF

82.7 KB Created: 2021-03-28 21:20:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: e9676428dab13aa4f9b223d667a2d6ed SHA-1: d7a6b5119272fc57c80d73ddd0518b5c0e280dc0 SHA-256: 6d43f972cd5a6d5705b235626f29a86f3f6fcde20fe0940ae3d5a6e6a22de200
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely as part of a phishing or credential harvesting attempt. The document body, though heavily obfuscated, suggests a lure related to technical documentation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=c+template+argument+deduction+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4468828/normal_600d10c4e3573.pdfIn PDF document text
    • http://50offstore.info/spider_man_far_from_home_online_latinonkvkw.pdfIn PDF document text
    • http://gamedv.design/how_to_replace_dodge_dakota_transmissionpyvrs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460251/normal_5fcd500d77556.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460231/normal_5fe5d44cb5ad2.pdfIn PDF document text
    • http://ramuwesitavoz.mywebcommunity.org/france_application_form_for_schengen_visa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378846/normal_5ff2d8e610a35.pdfIn PDF document text
    • http://wozuxel.getenjoyment.net/cnc_milling_machine.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453332/normal_605c345f509af.pdfIn PDF document text
    • http://doucheapp.xyz/short_story_synonyms_in_telugu5dt39.pdfIn PDF document text
    • http://juxumigine.mypressonline.com/history_of_architecture_book_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446286/normal_603fa010d8efc.pdfIn PDF document text
    • http://fawikenaxalu.scienceontheweb.net/contax_g1_user_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420760/normal_5fcb054bea7cb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bivanud/cast_of_the_blind_side.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/23774381769.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/lagu_cheating_on_you_charlie_puth.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/toniganulojukiretazisafap.pdfIn PDF document text
    • http://zonafikepejese.onlinewebshop.net/59745971035.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/american_thoracic_society_interstitial_lung_disease_guidelines.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_off0001062b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1062B 5120 bytes
SHA-256: fdb7bd3e8bbac382d5212ecf06cf970eeffb9cdad62dd113ae0005e2bc105b89
font_01_sfnt_off00011772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11772 11132 bytes
SHA-256: 484b1f623978c72b634b7a52fba479aaeb2b9c8cb6ea7ca3900af3dfcd8d21fa

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