Malicious PDF — malware analysis report

Static analysis result for SHA-256 9377e4e71d9c8ab3…

MALICIOUS

PDF

76.2 KB Created: 2021-05-14 17:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2ef95e9b91f2707f2cd566c346e26a0 SHA-1: b0efca354d8b81f1cb249fea8f753bcdbb282947 SHA-256: 9377e4e71d9c8ab3295e04580425497ef3e07d770059a99ecb9dc0c4c62b51dd
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL that mimics a search result for "Harry Potter and the Sorcerer's Stone book quotes", likely to trick users into clicking it. The PDF structure also indicates potential for embedded scripts, though none were explicitly extracted in a readable format.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xezojetit.ru/strik?utm_term=harry+potter+and+the+sorcerer%2527s+stone+book+quotes+with+page+numbers
    • http://get3creditscores.info/essentials_of_managing_human_resources_5th_canadian_editionwal7z.pdf
    • http://sedogowisu.iblogger.org/how_can_i_improve_my_english_speaking_and_writing_skills.pdf
    • http://wijofotezopadik.medianewsonline.com/51578025727.pdf
    • https://cdn-cms.f-static.net/uploads/4382190/normal_603ef29956f95.pdf
    • https://cdn-cms.f-static.net/uploads/4405903/normal_600afc263baa8.pdf
    • https://cdn-cms.f-static.net/uploads/4408992/normal_603a791b1b475.pdf
    • http://puduvab.sportsontheweb.net/93269027492.pdf
    • https://static.s123-cdn-static.com/uploads/4486751/normal_5fde815291824.pdf
    • http://contact-git.top/62402819862hx1f0.pdf
    • http://giocodigital.fun/27884485917mmxva.pdf
    • https://cdn-cms.f-static.net/uploads/4404313/normal_60217ecd9484f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://boreduse.rf.gd/88006744021.pdf
    • http://romipozaxijida.rf.gd/ludavozakebi.pdf
    • http://tiredosutozol.atwebpages.com/ponex.pdf
    • https://uploads.strikinglycdn.com/files/01a07b40-5b48-4cd8-b4ab-74c9e5e54a67/harbor_breeze_saratoga_change_light_bulb.pdf
    • https://uploads.strikinglycdn.com/files/099ba566-ab0f-46f6-8c64-e347b9489566/samsung_series_5_5003_manual.pdf
    • https://s3.amazonaws.com/zalisujezajaje/migifofijisakudek.pdf
    • https://s3.amazonaws.com/dudurat/50104275442.pdf
    • https://uploads.strikinglycdn.com/files/cd47a76b-5348-4dd3-9aae-f203817b0d32/dominos_pizza_recipe_in_hindi.pdf
    • https://s3.amazonaws.com/bodajaku/guxevozidalugozinolifejoz.pdf
    • https://uploads.strikinglycdn.com/files/7506174a-7e15-42d5-a429-f8d6818ce152/92697898483.pdf
    • https://s3.amazonaws.com/zodererezuzuxi/sativutojesodapovejusupav.pdf
    • https://uploads.strikinglycdn.com/files/34d35166-533b-497e-9977-f1402e5e9237/best_book_on_game_theory_for_beginners.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_off0000ed25.bin
53c98eb909fe8c50524a5815b68f9effcc75b000cb4722b0a22dce60a961fdc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED25 5972 bytes
font_01_sfnt_off00010169.bin
21b5cb80fd161d1e40736e184f2eaf6cdd2d31fd7aa8a8d6ed13c805e659ac0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10169 10204 bytes

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