Malicious PDF — malware analysis report

Static analysis result for SHA-256 09c42f24d3a8ff0b…

MALICIOUS

PDF

76.9 KB Created: 2021-04-06 00:42:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7517473e3f807476d1aadd5c71d73214 SHA-1: d180138d969df398b1d4ceb81a9b6c8bcff3d4d8 SHA-256: 09c42f24d3a8ff0be95bb279cc1da8ed419c94ef61395d5ac13e3b95a35ce5c6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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://mezovuduw.ru/wix?keyword=percent+composition+of+a+penny+lab+answers
    • https://cdn-cms.f-static.net/uploads/4450418/normal_603c857a9302c.pdf
    • https://static.s123-cdn-static.com/uploads/4451348/normal_5feb69e7827a4.pdf
    • https://juwexulomo.weebly.com/uploads/1/3/4/3/134385858/9199527.pdf
    • http://inmyshtangen.xyz/graphing_lines_using_x_and_y_intercepts_worksheet9m1vc.pdf
    • http://differencecheats.net/contemplate_my_lifeqdjv1.pdf
    • http://www19216801.site/80097062913mrf4e.pdf
    • http://dvertsoff.ru/2005_honda_civic_si_hatchback_owners_manualwdgpy.pdf
    • https://cdn.sqhk.co/guvawatuzax/ifkQihT/diy_dice_tray_ikea.pdf
    • https://rapinawenag.weebly.com/uploads/1/3/0/9/130969945/pelopinunakag_regufedug_depepolil.pdf
    • https://cdn.sqhk.co/taxodisilif/4jgS0na/19109766543.pdf
    • https://cdn.sqhk.co/wudenedu/FWUgiRO/digestive_biscuits_brands_usa.pdf
    • http://carbackseat.site/survival_game_jurassic_evolution_world_mod_apkv70mx.pdf
    • http://legionmone.xyz/labirent_3_indir_trke_dublaj0atqt.pdf
    • http://effektzhizni.ru/sony_playstation_vita_16gb_memory_cardeoazb.pdf
    • https://cdn.sqhk.co/gofejenizew/bQnRmfk/57360851704.pdf
    • https://cdn.sqhk.co/nemalerute/aQCifgi/door_kickers_2_task_force_north_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4420743/normal_60344201d5822.pdf
    • https://metidelesaweso.weebly.com/uploads/1/3/0/8/130813592/zoruronuvat_vutafedotapax.pdf
    • http://timelessdecorum.com/kotisififedadeluweleeh5i8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/861e9cfd-127f-442c-bcc9-330392448166/94109310231.pdf
    • https://uploads.strikinglycdn.com/files/364d7858-4f4b-4b29-b104-b358839a6780/troy_bilt_tb20cs_spark_plug.pdf
    • https://uploads.strikinglycdn.com/files/fc8fd94c-da14-4238-9305-8fe46e88a83f/zubow.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e185.bin
68d094faf81d2ea9f62e68ee4e789e40b6192f27e323b9e50c58fbaa8f881837		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE185 2900 bytes
font_01_sfnt_off0000ebc8.bin
f88732242905473f082b35e372fa7b4784db097f9c7395bcac40f4d1033e7092		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC8 5496 bytes
font_02_sfnt_off0000fe79.bin
2eb1a0e8bf08cff061f991f4320cc43221d04a0c5feb5e9b93e953c22b56e925		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE79 11540 bytes

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