Malicious PDF — malware analysis report

Static analysis result for SHA-256 c07473e263c43181…

MALICIOUS

PDF

71.8 KB Created: 2021-03-11 12:21:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29713bdc6ce9b6edcf9d7153428f0858 SHA-1: b643ee0f07457dacd18559a55cbe7b526eef1c1a SHA-256: c07473e263c43181b4f814074ade018024f90778f8e14b695881640fd95c46a0
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'ponafet.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a song title, potentially to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://ponafet.ru/123?utm_term=kelechi+song+nasubiri
    • https://cdn.sqhk.co/mosizuwowux/jage21Q/customer_complaint_reply_letter_template.pdf
    • https://cdn.sqhk.co/goxobuve/ij8uSij/savings_goal_formula_excel.pdf
    • http://presentinsta.online/can_you_buy_a_stihl_chainsaws_onlinehh0zs.pdf
    • https://cdn.sqhk.co/felolavap/ifngclD/at_t_mark_the_spot_app_store.pdf
    • https://cdn.sqhk.co/tuzijaxab/J5LhaRM/fijexufofigigem.pdf
    • https://cdn.sqhk.co/wimiwupo/iaPQgdd/red_ball_3_volume_4_unblocked.pdf
    • https://cdn.sqhk.co/padumaxifop/jid9Rgi/tiles_hop_3d_download.pdf
    • https://cdn.sqhk.co/xanovixewin/T9ieiS7/bird_stack_jumping.pdf
    • http://zugapuvu.mywebcommunity.org/warhammer_fantasy_3rd_edition.pdf
    • http://tenipimutav.mywebcommunity.org/algorithme_et_programmation_2.pdf
    • https://cdn.sqhk.co/xapanularopu/gKhcdhg/20147847516.pdf
    • https://cdn.sqhk.co/zexoribuj/1GrLEjj/war_of_warships.pdf
    • http://hugertely.xyz/dufivapugikowaromokimokalzlcqk.pdf
    • http://bitsracing.net/duketifalepog0v1mr.pdf
    • http://fafesixokegigi.getenjoyment.net/gogudax.pdf
    • https://cdn.sqhk.co/zurefaxenov/gijcEWt/music_maker_jam_chromebook.pdf
    • https://cdn.sqhk.co/bipuzojafa/hhrVhjT/frantic_synonym_verb.pdf
    • https://cdn.sqhk.co/bozutebux/biibw5m/nefisewuj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://wutejaxevewef.myartsonline.com/satotajapakufanarefezi.pdf
    • https://uploads.strikinglycdn.com/files/0bd9353f-67dc-4ce3-8dad-034419c88714/how_to_propagate_prayer_plant.pdf
    • http://tulajadulixo.myartsonline.com/popstar_never_stop_never_stopping_netflix_country.pdf
    • https://uploads.strikinglycdn.com/files/4f084c2c-4313-49c2-ba8d-8c5b0538888f/historia_de_una_escalera_apuntes_selectividad.pdf
    • https://uploads.strikinglycdn.com/files/9731c41a-f601-4994-a395-a0a5d4878940/76694407684.pdf
    • https://uploads.strikinglycdn.com/files/5f8609dc-f96b-4da9-bd25-1764d004ca11/bosch_dishwasher_installation_brackets.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_off0000cd76.bin
7051f065162956336aa68102d25d5398d6a7194da89c5ca9d75e8169c761c131		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD76 4972 bytes
font_01_sfnt_off0000de45.bin
d4bcaf44c360b087b8aa0e20591928cfc7ad71d833c85644b7b53fca72e829a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE45 10812 bytes
font_02_sfnt_off0001033d.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1033D 4324 bytes

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