Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb9244827150c16e…

MALICIOUS

PDF

74.8 KB Created: 2021-03-23 15:25:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2ccf0894d808848174776e2ccbff09ea SHA-1: 77a5038e935645bf7ea28b690c1eda04efa75c87 SHA-256: fb9244827150c16ec42f2f5a4446865db1e3d510bc45bb914d8ad042578649b2
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. An external URI pointing to 'dugedepap.ru' was extracted, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs are consistent with a phishing lure designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/strik?utm_term=maytag+bravos+washer+bearing+repair PDF link annotation
    • http://presentinsta.online/shigley_s_mechanical_engineering_design3g97b.pdfIn PDF document text
    • http://pokupka.space/epson_powerlite_home_cinema_730hd_lamp9wt5b.pdfIn PDF document text
    • http://fruitik.space/terra_fighter_2_fighting_gamesot5jf.pdfIn PDF document text
    • http://believes.space/pawekibuxorvjfh8.pdfIn PDF document text
    • http://nakanilo.club/duxixeja9qed2.pdfIn PDF document text
    • http://salet.store/idsa_guidelines_haemophilus_influenzae02mkf.pdfIn PDF document text
    • http://trickyturkey.com/ranco_thermostat_cataloguenj85l.pdfIn PDF document text
    • http://justamorem.com/clash_of_clans_hack_apk_bluestacksm9od9.pdfIn PDF document text
    • https://senekuzoje.weebly.com/uploads/1/3/5/9/135978249/wijow_mojow.pdfIn PDF document text
    • https://wotigutaz.weebly.com/uploads/1/3/4/3/134361511/gumixeros.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/mandatory_reporting_elder_abuse_ohio.pdfIn PDF document text
    • http://silinodev.rf.gd/14145317199.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/libevudusikesu.pdfIn PDF document text
    • http://lemitubelitod.rf.gd/hamilton_beach_professional_toaster_oven_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/the_new_leaders_100-day_action_plan_4th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/59219604980.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/zoniviza.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/quarterly_calendar_template_powerpoint.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/12355579279.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_off0000e75d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE75D 5448 bytes
SHA-256: ad2faae8771fda87a22d127e58a830f69f459e80fec811dfd27ad705af6356b6
font_01_sfnt_off0000fa0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0A 10424 bytes
SHA-256: ed76c8b0fc778c8570d59ba8dcb578fb723a5150677abb89c87815dfdaada143

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