Malicious PDF — malware analysis report

Static analysis result for SHA-256 a55f14f48e82bc06…

MALICIOUS

PDF

85.9 KB Created: 2021-03-03 18:45:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 726fa16063747e50f7658983bc17d925 SHA-1: 61f0cc2e1892e22c2639340ff1daeabed331cd38 SHA-256: a55f14f48e82bc0666b5bdecf63f14e4cab7d7c7e6b3f9f673d42e9df57de8aa
124 Risk Score

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 0.8955

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://nipisod.ru/award?keyword=what+are+the+toronto+argonauts+named+after PDF link annotation
    • http://fupefabesosada.mygamesonline.org/how_to_replace_belt_on_maytag_washer.pdfIn PDF document text
    • http://mizejodaf.mywebcommunity.org/tutoweme.pdfIn PDF document text
    • http://mamajan.space/mofitarapiwoteradopazog9do5l.pdfIn PDF document text
    • http://fanisore.sportsontheweb.net/71280682731.pdfIn PDF document text
    • http://biomanuawebsiteua.xyz/insanity_flyff_blue_chips_guidew10w6.pdfIn PDF document text
    • http://vashmaster.info/how_to_determine_change_in_position_from_a_velocity_time_graphq73fa.pdfIn PDF document text
    • http://1xbet-registrat.site/duraflame_1500_watt_infrared_heater_reviewswokuy.pdfIn PDF document text
    • http://idealicaitaly.site/semiwelorefasa8wv3g.pdfIn PDF document text
    • http://fionainthefield.org/vexesalevugu0zk4j.pdfIn PDF document text
    • http://20970907.net/34232816889pocy9.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/kirufejowigikavasanu.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/grammar_practice_book_grade_4_answer_key.pdfIn PDF document text
    • http://niburufajanuto.sportsontheweb.net/penik.pdfIn PDF document text
    • http://vkysnaya-eda.site/xolulutekaxarigaresej6sr0.pdfIn PDF document text
    • http://kepagewav.atwebpages.com/haruki_murakami_norwegian_wood.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/lol_fizz_build_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/how_does_zotero_works.pdfIn PDF document text

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