Malicious PDF — malware analysis report

Static analysis result for SHA-256 7281e6231d3b6226…

MALICIOUS

PDF

53.1 KB Created: 2021-03-28 08:10:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3d9fd17ecb13a36125853de46f191093 SHA-1: 6fcea004b87e582f9d475531c468c127355befa9 SHA-256: 7281e6231d3b6226c7ea14ce120a411f44b47755b00577d16c101b291042bc5a
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7337

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xajibur.ru/award?keyword=acca+f3+paper+pdf PDF link annotation
    • http://kudretbozaci.com/4541424628ug5us.pdfIn PDF document text
    • http://gasolotiravizid.sportsontheweb.net/candide_voltaire_deutsch.pdfIn PDF document text
    • http://dokakepitizix.medianewsonline.com/what_is_the_catholic_definition_of_marriage.pdfIn PDF document text
    • http://myirn.icu/head_horse_horror_game_note9pwaz.pdfIn PDF document text
    • http://sepoxudozixo.sportsontheweb.net/the_artilleryman_s_vision.pdfIn PDF document text
    • http://pojapusevipuzu.mypressonline.com/livabadovisanabi.pdfIn PDF document text
    • http://lnstagramcopyrightservices.org/31695457209kvu2y.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/margin_of_safety_mechanical_engineering.pdfIn PDF document text
    • http://juborad.mywebcommunity.org/wokikafamajilaz.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • http://zabolojisag.getenjoyment.net/19115217864.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/putanogasa.pdfIn PDF document text
    • http://taroveruwidiba.onlinewebshop.net/business_in_nigeria.pdfIn PDF document text
    • https://51da6a7d-ee05-4a49-87ee-1b74af3aeb07.filesusr.com/ugd/b80405_a9b682856c0140618e84f6e22a401c42.pdf?index=trueIn PDF document text
    • http://zilisidojaze.myartsonline.com/debatumimebadugamijonezas.pdfIn PDF document text
    • https://ec5c17a1-061e-4a2c-a9e6-b3561ba71229.filesusr.com/ugd/299074_158c4091c2ba4d75ae635160fd4841ae.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f5dbc48-bd01-4cbc-ac6d-a2d00a517ae6/zupuribudi.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/liftmaster_security_plus_2.0_universal_remote.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/how_to_tell_if_dryer_thermostat_is_bad.pdfIn PDF document text
    • https://e3055f73-6236-423b-b810-4bc1a15f300f.filesusr.com/ugd/fa12d1_cc43aea2f0a84dc48ac32ada46c5982d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/14b31105-8758-4c76-99d7-1591d6c77994/alaska_drivers_manual_flashcards.pdfIn PDF document text
    • https://3d7c42e8-cad9-4196-8f3c-0f210fd97588.filesusr.com/ugd/1b7c00_01206f84231b41a88a205ba57a169ed9.pdf?index=trueIn PDF document text

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