Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ace746e64118d3b…

MALICIOUS

PDF

65.7 KB Created: 2021-02-27 21:55:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db5342147db7535e4ca83b37efec2588 SHA-1: addd3613a0e8a2bedd0af5ac0ef9d35be51ad674 SHA-256: 6ace746e64118d3b921f6b12211f25c89892f9e0f363f8261227cbcaf87fae84
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to a suspicious domain, likely intended to deliver a phishing lure or malware. The document body, though heavily obfuscated, suggests a deceptive pretext related to online resources. No scripts were extracted, but the presence of multiple external URLs indicates a likely attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/aws?utm_term=politics+for+dummies+online
    • https://cdn.sqhk.co/pijajawopoji/ieN6Sgh/ganik.pdf
    • http://rubewox.sportsontheweb.net/20115137979.pdf
    • http://lebizifijafaxim.medianewsonline.com/interview_questions_and_answers_examples.pdf
    • https://cdn.sqhk.co/famuxina/ge0rZic/billion_builders_mod_apk_unlimited_money.pdf
    • http://zugemenelil.medianewsonline.com/93144340459.pdf
    • https://cdn.sqhk.co/fijufupuga/R9giWXc/piggy_boom_game_play_online.pdf
    • http://xenirukanasi.iblogger.org/rogemolerebeziz.pdf
    • https://cdn.sqhk.co/diwelamu/Vjfgcha/vidanawusoxe.pdf
    • https://cdn.sqhk.co/suxumeva/aGidhju/dog_new_baby_problems.pdf
    • https://static.s123-cdn-static.com/uploads/4409395/normal_6002ef2bb34c0.pdf
    • https://cdn.sqhk.co/vetelojid/Poja4je/7912118897.pdf
    • https://cdn-cms.f-static.net/uploads/4375515/normal_601a47d07bceb.pdf
    • http://zememor.sportsontheweb.net/2017_honda_civic_hatchback_service_manual.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/goveruduzewoxu/56312601487.pdf
    • http://rekutuvogunavur.rf.gd/murudakakowixire.pdf
    • http://geforagegi.atwebpages.com/what_base_do_navy_seals_train_at.pdf
    • https://s3.amazonaws.com/nemafu/archydro_for_arcgis_10._1.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_off0000c638.bin
634968244cda00f1dd66f696feb651d476917b2fd215eb92a2c67b597a7908bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC638 4956 bytes
font_01_sfnt_off0000d702.bin
a1c02cf9f2e797ae76ba9525191e7063f2d9f4bb26d04795321fd9a00229ca59		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD702 9992 bytes

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