Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd6f5a5e505359c2…

MALICIOUS

PDF

77.1 KB Created: 2021-04-02 22:26:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea245d019ebd1c48a5e1693ed04b7894 SHA-1: f41559940d743d05b46fbd474a720cd8418dd8e3 SHA-256: bd6f5a5e505359c2fc66d565d604acec707f28a1e7399a6cdd2fe220df2ca399
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. The document body, though heavily obfuscated, suggests a lure related to a 'weight training routine pdf', which is likely a pretext to drive the user to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://pelibifir.ru/award?keyword=beginner+weight+training+routine+pdf
    • https://static.s123-cdn-static.com/uploads/4477401/normal_5fc95b9ea2cfc.pdf
    • https://cdn.sqhk.co/baxorurifina/icjgggo/75270277230.pdf
    • https://cdn.sqhk.co/pekobenew/Zjc5jcy/14997893043.pdf
    • http://gagapazu.scienceontheweb.net/98499966602.pdf
    • https://cdn.sqhk.co/ninivaxibab/gjahbqS/sculpture_definition_for_kindergarten.pdf
    • https://cdn.sqhk.co/wepurodapike/fF7tWmv/play_4_keeps_hoodie.pdf
    • https://cdn.sqhk.co/kunutewiwit/V2tQoic/domaza.pdf
    • https://cdn-cms.f-static.net/uploads/4403543/normal_605a52763c3d2.pdf
    • https://cdn.sqhk.co/vusutesilo/jyieSLE/dusoselotirelupiwovam.pdf
    • http://pejazadajenatew.getenjoyment.net/13333462963.pdf
    • https://cdn.sqhk.co/pabelemusib/iDPJgfw/play_free_sim_taxi_2_game_online.pdf
    • https://static.s123-cdn-static.com/uploads/4455198/normal_5ff51def42ad2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jijeledinevo.rf.gd/20545043728.pdf
    • https://uploads.strikinglycdn.com/files/2a6e7360-66fd-4a1f-a126-846bdb40a3a1/vobisupomi.pdf
    • https://uploads.strikinglycdn.com/files/41618c2b-0a77-4bc7-b49f-011e89cfae0d/how_to_use_canon_as_webcam_for_zoom.pdf
    • http://xewepipesu.epizy.com/waxok.pdf
    • https://uploads.strikinglycdn.com/files/5a6f22b7-9b6e-4942-bb03-66fb42bdcce6/best_4_person_hot_tub_for_the_money.pdf
    • http://pixafur.atwebpages.com/vijeza.pdf
    • http://natetakadax.epizy.com/service_contract_termination_letter_format.pdf
    • http://zukovijaxi.epizy.com/sonnet_130_worksheet.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0c6.bin
e801b79490f5b04cd5e5a8de78274e84fd8c70e9877c2429636a2bc6f9deeb45
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C6 5236 bytes
font_01_sfnt_off000102a8.bin
25b018566f5b36ebd085c4f14f711b648b9949f3196bc602e5cc395846dda6e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x102A8 10812 bytes