Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d517dff79f068a…

MALICIOUS

PDF

65.1 KB Created: 2021-06-09 18:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b61e782d28d75dd34bf4d2d28f120f03 SHA-1: 6dcfcf577455a38afc9c20db52b92599e73a2779 SHA-256: 97d517dff79f068af5ed30757dae241c2f43371d55a302084ffad513ffee14df
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan-like behavior. It contains numerous external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains keywords related to game downloads, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

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://nomylo.ru/pbw?utm_term=fnaf+3+download+free+full+version+android PDF link annotation
    • https://xunatopek.weebly.com/uploads/1/3/2/7/132710497/7eed47f6e471c1.pdfIn PDF document text
    • https://pamesatigifimes.weebly.com/uploads/1/3/4/6/134639420/13370fd7cfe6313.pdfIn PDF document text
    • https://kotevopokevunab.weebly.com/uploads/1/3/4/5/134590751/zarenatuxodawe-rimixuf-rigejixenavuv-bekomoti.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nagomax.pbworks.com/f/theological_dictionary_of_the_new_testament_abridged_in_one_volume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbe4e28f-8ee8-45fe-8d32-c0324e635b06/yamaha_mox8_vs_moxf8.pdfIn PDF document text
    • http://wetavun.pbworks.com/w/file/fetch/144832287/32046425207.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/349c5615-29a9-4acf-b1fe-da086c50b62c/61461571463.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b52ffb9-e843-4aeb-9b88-60ce61c1ac25/41752915113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a42beb6-6c41-47d0-bb75-acf91eb938d0/modern_oromo_names.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1500deb-0534-4aea-9bda-a50147d91039/dibujo_tcnico_2_bachillerato_mc_graw_hill.pdfIn PDF document text
    • http://mosijiv.pbworks.com/f/xulafaporixeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/639329f3-e2a0-4f09-b9c0-af46f56e998b/dark_souls_2_save_game_editor_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f77114aa-14d7-4ff2-a1a3-443aea3d7e7d/tabotipodorulirag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c89c7b8-4438-47bf-bb63-5080c6b7dee1/teach_conversational_english_online_jobs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/606cb16d-f894-4488-9833-baec55ca63bc/99990529993.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77a9a120-8880-4512-9176-8ef4b34bc7cf/kenmore_elite_oven_not_working_after_self_clean.pdfIn PDF document text
    • http://lopofemusun.pbworks.com/f/how_to_use_a_rove_battery.pdfIn PDF document text
    • http://tazijebep.pbworks.com/f/need_for_speed_payback_ps4_mod_menu.pdfIn PDF document text
    • http://tirotibixup.pbworks.com/w/file/fetch/144783606/augmentative_form_definition.pdfIn PDF document text
    • http://jifosez.pbworks.com/f/baxemipikivenapijuje.pdfIn PDF document text
    • http://bojifimaral.pbworks.com/f/dituga.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E9 5172 bytes
SHA-256: 60f07072ca19a77a898cac17507a46a9fb860e767a46477808b4f3ca3ebeac66

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