Malicious PDF — malware analysis report

Static analysis result for SHA-256 723adb003d8f705a…

MALICIOUS

PDF

92.2 KB Created: 2020-12-11 08:06:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 504ce60dc04ac5b1724c581667b83ac1 SHA-1: 3fca64678ee25581c4c54b2e66aac94de36bd6a6 SHA-256: 723adb003d8f705af62e671ba0439d7be846e4e208747835792e7ec16c1751ca
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/123?utm_term=patterns+of+culture+summary In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368249/normal_5f886bef65cb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380068/normal_5f9e7b489dd65.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc4d3c5b8467722f1ed09d4/t/5fc59b8af3de5e49b5266e42/1606785930784/how_to_fix_ps4_controller_analog_stick_stutter.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc35f47ec917750a3e7896c/t/5fd028ab6cbf29106bf28885/1607477419834/modern_warfare_season_7_leaks.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ba3b0a2757459be1f9cb/t/5fc18db161e25426e172e47e/1606520241161/64901323225.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e034bfb-487b-4acb-8777-67d315131db9/4442232227.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/66531293342.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7d61b0c-1b42-4c29-beae-ec315b04efde/alanis_morissette_s_jagged_little_pill_lyrics.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd108fb474932ca26a7131/1606226064111/mexogonazemidutanebo.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/68053711275.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/75511610398.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6fa158651a04751952937/t/5fcdc1609aa2de0c64b37aff/1607319906624/75648683607.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/82588332738.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/29797268106.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2923b7848ba205d233c3f/t/5fd1b5630f163860c7ade99c/1607578980504/konetebati.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/secure_base_clinical_applications_of_attachment_theory.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18f8d0a2757459be7919f/t/5fc9b23d8562787517587cb1/1607053885628/juginam.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_off00012b69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B69 5132 bytes
SHA-256: 02e313a3a480b2f6e18a639a1fec60693d31856a39a85f38812c1ed5e9a08b62
font_01_sfnt_off00013cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CD2 11412 bytes
SHA-256: e75d2a9d89b66e965f9d989ac04dd42657176e21d908d4445189ec46b61f3aac

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