Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d4d996dc0b401e5…

MALICIOUS

PDF

59.6 KB Created: 2021-04-04 02:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 543c1cca960f44bf96ee4849e8d91fef SHA-1: f1c2f07b54485f2d0b90e634c1ef9cdbf9b75a79 SHA-256: 2d4d996dc0b401e5a8a2b600ddd29c0b1c6f575b2e4663320b42c59a078622a2
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or phishing lure. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6893

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=asnt+ut+level+2+questions+and+answers+pdf PDF link annotation
    • https://kixasakuzejud.weebly.com/uploads/1/3/5/3/135347884/0398f837429ead.pdfIn PDF document text
    • http://pollsexpert.com/2895877907900x6e.pdfIn PDF document text
    • http://firstdoctor.xyz/chain_reaction_game_show_2020s00bw.pdfIn PDF document text
    • https://gofolepoxi.weebly.com/uploads/1/3/4/8/134882907/wezogijisa.pdfIn PDF document text
    • http://tixshopclub.space/i_command_my_hands_lyricsxgyso.pdfIn PDF document text
    • https://nanijufofif.weebly.com/uploads/1/3/3/9/133999758/rodowodama.pdfIn PDF document text
    • http://localdesign.me/tukototizadoge1n6t3.pdfIn PDF document text
    • https://napifilimikap.weebly.com/uploads/1/3/1/6/131606974/9832163.pdfIn PDF document text
    • http://lovelyhouse.online/aircare_humidifier_cleaning_instructionsftzc8.pdfIn PDF document text
    • https://144ece88-722e-4d59-a9d1-ae16887514c2.filesusr.com/ugd/48b17f_61a3d2f94a954c12809648f6362f636d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/toro_personal_pace_mower.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0abc9956-1f56-4f5d-898f-9196e67d835f/45581425928.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e719866-be93-446d-979d-f79d74c0f287/netgear_wgr614v9_setup_as_repeater.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/masozepiroxiruvofeb.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/jenn_air_gas_electric_grill_range_with_convection_oven_manual.pdfIn PDF document text
    • https://86a6be6f-1c3f-48a2-98e5-8a654ddc1212.filesusr.com/ugd/027f51_f4c4d3e377db4002a5d1a178eeb40b74.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d58b5c9-dae0-4f49-828f-605045680ab6/93956352043.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba8dd6fd-ff4a-417c-b6cb-8e81bef0762e/24954503726.pdfIn PDF document text