Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fa5a8c57ab40afb…

MALICIOUS

PDF

105.5 KB Created: 2021-03-25 07:39:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3925238271635c607f72874fa424b932 SHA-1: 1d804c45425da8e158f585efcf29eb62cfda3407 SHA-256: 6fa5a8c57ab40afbcbbc9aacad996e268d62d9bc78e01221d335fd7cd5d951ac
104 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and ClamAV detection confirms its malicious nature. The heuristic for urgency lures suggests a phishing attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate it's designed to redirect users to malicious content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://kuzutuzo.ru/wix?keyword=shadow+of+war+trolling+trophy+guide
    • http://kevifiregerufug.scienceontheweb.net/a_night_to_remember_titanic.pdf
    • http://13millions.store/28169619488d2r2.pdf
    • https://vamekalufigo.weebly.com/uploads/1/3/1/1/131163651/7187055.pdf
    • https://lafetewefovizav.weebly.com/uploads/1/3/4/3/134385578/462d3c2638bb.pdf
    • http://rankingcoach-apps.com/832102504291n2f8.pdf
    • http://tojagetuwiger.iblogger.org/blade_movie_in_tamil_hd.pdf
    • https://sitasujo.weebly.com/uploads/1/3/4/8/134876827/5187532.pdf
    • https://cdn.sqhk.co/bowewulaxam/7BgjTjd/treasure_hunters_series_book_2.pdf
    • http://bhd-management.space/phishing_email_template2r7gz.pdf
    • http://jirafka.space/5051860839qul6i.pdf
    • https://cdn.sqhk.co/jupozaregu/wif40wn/st_patrick_s_cathedral_livestream_mass_today.pdf
    • http://vidoroxujo.22web.org/76505643791.pdf
    • https://relelije.weebly.com/uploads/1/3/1/4/131438324/3046649.pdf
    • https://tefegepivovopuf.weebly.com/uploads/1/3/5/3/135311357/toxavawovuta_kenubu_zixewebojimeb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/748af8ee-4800-4661-a1b2-ec8ca84d2c57/for_cause_and_comrades_chapter_5_summary.pdf
    • http://metusajixano.epizy.com/80892352104.pdf
    • http://kapowuxivi.atwebpages.com/zujoraxevorepabogifim.pdf
    • https://uploads.strikinglycdn.com/files/8f9f1ed7-f07c-4b86-a8a4-72aa80e15cb1/who_has_black_ice_r6.pdf
    • https://uploads.strikinglycdn.com/files/22764b35-edd1-4121-bef8-a76f8e12ea4b/when_did_greek_civilization_start_and_end.pdf
    • https://uploads.strikinglycdn.com/files/285252e9-b7c9-49f4-b1c4-644a3614bfa2/zanumoliwajevofedaboxin.pdf
    • http://gidigeja.rf.gd/jafezewuvivifafowusawa.pdf
    • https://uploads.strikinglycdn.com/files/7e2c8ae6-8fbb-49ad-bab4-e0c87e515883/5th_grade_math_perimeter_worksheets.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_off000150d8.bin
0cb1e4917843006209e432c604b40e4858199d345111db483b1fb57543fffdad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x150D8 5304 bytes
font_01_sfnt_off000162e9.bin
62f1dc517a87981bbe06c221e798ac3560398bff23634d3c79995b33c6573b20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x162E9 11996 bytes
font_02_sfnt_off00018a33.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18A33 4324 bytes

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