Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7566bb0031b6ce9…

MALICIOUS

PDF

64.0 KB Created: 2021-03-08 13:04:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 86105cf026525e24ece59194461925e3 SHA-1: c863e587103dc42cc89ef9cbb6567368fb097aab SHA-256: a7566bb0031b6ce979c2dfae95886a50edbef39b163d496158b6e609e4baa90e
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 0.9639

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://jumiwimov.ru/award?keyword=aristotele+filosofia+pdf PDF link annotation
    • http://tufodudem.mypressonline.com/pairing_full_jvc_unit.pdfIn PDF document text
    • http://mufutekuson.getenjoyment.net/bowepekaliza.pdfIn PDF document text
    • http://gosoxegekiri.mywebcommunity.org/3._what_is_the_central_theme_of_the_poem_the_road_not_taken.pdfIn PDF document text
    • http://simopuvoramawu.mywebcommunity.org/best_planetarium_app_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/vufisolepu/jhbMKtM/jelly_defense_lite.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/dfhhcIe/how_to_get_monkey_mask_ghost_of_tsushima.pdfIn PDF document text
    • https://c0cead0d-5248-483d-940e-95cc3acd9bde.filesusr.com/ugd/20d83a_86b199e8813d4e23b616d4d7d49cacd1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kafises/halide_edip_advar_ateten_gmlek_indir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bf9780b-712e-4935-bfcb-50d145943080/malanomufamoziruvotabawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cdb7ea0-bc57-4091-9f3c-619cfda58428/82245267833.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc95f9fa-297d-46e5-855f-bb0a15980e07/govivipise.pdfIn PDF document text
    • https://8f20b4bd-83f7-4a55-8c6f-e9501e2e061c.filesusr.com/ugd/c1c462_6a6eaa7d859b4a828e247adeae29349d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/15506590513.pdfIn PDF document text
    • https://fbaba6ab-37cf-477f-82bd-e10a416eccda.filesusr.com/ugd/3c8574_5294ca406a40457fb00551890cf32081.pdf?index=trueIn PDF document text
    • http://petojijoxura.onlinewebshop.net/how_do_you_clear_error_codes_on_samsung_refrigerator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be8a60ac-af95-45b0-83af-28b58d8ddfce/how_to_restart_a_water_heater.pdfIn PDF document text
    • https://a49aa754-465e-4bbd-924e-b3d0e7b66bd4.filesusr.com/ugd/81d6a4_140239bfd660404c9de80c18add3542c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sojaxub/madejulitotos.pdfIn PDF document text