Malicious PDF — malware analysis report

Static analysis result for SHA-256 67acd6d68663128e…

MALICIOUS

PDF

80.8 KB Created: 2021-03-24 01:27:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: bc73647d7156198429f6fac83420c9d4 SHA-1: 2e6b058e1c12402f817db961e1fa5d15ebc3c309 SHA-256: 67acd6d68663128eef2730ef7bb31deb2e8e2f497c750361babb5d23861f6b91
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that masquerade as software manuals, specifically for Audacity, to trick users into downloading malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of external URIs suggests a download or redirection attempt.

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://gimoguvi.ru/wix?keyword=audacity+2.1.3+manual+download PDF link annotation
    • http://gunonoxuketevel.22web.org/ribapidulejagodizabososuj.pdfIn PDF document text
    • http://xusegerobexusag.iblogger.org/11447329147.pdfIn PDF document text
    • http://ropejolun.iblogger.org/section_138_of_negotiable_instruments_act_latest_amendment_2020_in_hindi.pdfIn PDF document text
    • http://shopmzm.site/nafogapozalebjnbz2.pdfIn PDF document text
    • http://pro-gram.pro/crosley_cruiser_dove_grey_bluetooth_vinyl_record_player_reviewl7mj1.pdfIn PDF document text
    • http://fapevenaxopaw.22web.org/vuxapipuzibodipode.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sarigeselos.epizy.com/late_roman_art_industry.pdfIn PDF document text
    • http://jejivosijej.rf.gd/33341800570.pdfIn PDF document text
    • http://vimobuzu.epizy.com/cuisinart_touchscreen_burr_mill_coffee_grinder_dbm-t10c_14-cup.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/pomofopusis.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/lunibizizobepenovebagobaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2ba5e83-1ad5-4fa1-854c-6cef99614be6/the_martian_book_summary_chapter_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7471c806-1bc7-4dfc-ac94-07559e6f3b95/how_much_does_a_pressure_washer_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0cb8ad4-7a64-4d21-806f-d70681fbf864/innovative_ideas_for_online_meetings.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/kupelarumasaruwagodakon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42a9fd3a-1514-4bbc-a7d5-8d5d2bf67456/the_game_of_life_board_game_new.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/34326029455.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/b._ed_form_2018_rajasthan_last_date.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/keponuvelekofigudezejoda.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/zeitgeist_player_s_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/523c2107-6973-4a52-b7a5-2cdd0e138c33/how_do_i_reset_my_voicemail_password.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/givozevositumawe.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DA 5372 bytes
SHA-256: 0b81abd9f7b8ca7bc654c5b88a459923e422370df67983fa689e433e40e7a980
font_01_sfnt_off00010c3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3B 12648 bytes
SHA-256: d9c76008ddaf4329d3ecfdfdc17a8a021381b60765b1a316170ae6c056f99946

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