Malicious PDF — malware analysis report

Static analysis result for SHA-256 33a04a357cf0b47f…

MALICIOUS

PDF

73.6 KB Created: 2021-03-26 04:13:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e51a7f2e1b1e9c1fd54f49660f33763 SHA-1: 236bbfdcc36553a1adee31bfea9f4892c103d9d2 SHA-256: 33a04a357cf0b47f59e3e611602e0475c8492983ae416d875457c36ff3502ced
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and is flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, suggests a lure related to 'agv automated guided vehicle ppt', directing users to external sites like https://ponafet.ru/123. No scripts were extracted, but the presence of external links and the phishing detection point towards a phishing attack.

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://ponafet.ru/123?utm_term=agv+automated+guided+vehicle+ppt
    • https://jazelufum.weebly.com/uploads/1/3/5/9/135965355/nuvivid_lexofutuvowupav.pdf
    • http://unlockdeals.shop/vocabulary_workshop_level_d_answers_unit_11y5wcd.pdf
    • https://verumoxozuvije.weebly.com/uploads/1/3/1/4/131407377/nomegokokapa.pdf
    • http://zeropium.com/can_i_control_my_dvd_player_with_my_xfinity_remotec0mcw.pdf
    • http://ighelperscenter.com/225713818053aypl.pdf
    • http://kovamuwaropepu.getenjoyment.net/kupunidu.pdf
    • https://nupanirosum.weebly.com/uploads/1/3/4/8/134858368/9ba61.pdf
    • https://mabobuloxulekev.weebly.com/uploads/1/3/4/6/134692970/124e53d7de53.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d07d4355-8859-4144-9ea8-591489b047fc/novezevemesuminuniwi.pdf
    • https://s3.amazonaws.com/tobito/kinizutinit.pdf
    • https://uploads.strikinglycdn.com/files/cefbb203-2b02-4332-bb4a-88bbaeb5a81d/how_to_catch_him_and_keep_him.pdf
    • https://uploads.strikinglycdn.com/files/8e8dd482-bd36-4302-9a0b-956da380a72e/who_is_god_ks2.pdf
    • http://fotizojorirepel.onlinewebshop.net/bracelet_montre_casio_3157_sgw-100.pdf
    • http://fatofejeripise.rf.gd/modern_hebrew_alphabet_chart.pdf
    • http://tigagatu.atwebpages.com/25080512024.pdf
    • https://s3.amazonaws.com/winumigutam/antique_gregorian_sheet_music.pdf
    • https://s3.amazonaws.com/metubevozisul/lds_temple_preparation_book.pdf
    • https://s3.amazonaws.com/wixatax/does_ocd_get_better.pdf
    • http://melaganotig.rf.gd/adawat_novel_free_download.pdf
    • http://tetizawoto.rf.gd/gosukuj.pdf
    • https://s3.amazonaws.com/fejififimaketo/what_does_seasonally_adjusted_cooling_capacity_mean.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_off0000e23d.bin
744d2a749c2529124fe5cb0528d72c8113eff509d8928bbdc4cb5c1b3471351b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE23D 5260 bytes
font_01_sfnt_off0000f40e.bin
555ae6e1079833d2f5848c4fe4f16f5cca6fe1ae8ef4c51f3c9dbf0e8b2218b7
pdf-font-stream PDF embedded font (sfnt) at offset 0xF40E 11112 bytes