Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff7d247284d37349…

MALICIOUS

PDF

71.3 KB Created: 2021-02-24 10:37:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5775c1e9b472ea781314a20ba1eee74f SHA-1: 1118aa7d0050e483b603ce2d67e697d530bae6f1 SHA-256: ff7d247284d37349b5894111967d3ff511ea53ae4452c17786d4369d35d3358f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a search result for a product manual, likely to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest a phishing or redirection attempt.

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://maypoin.ru/wix?keyword=cool+living+10000+btu+portable+air+conditioner+manual
    • http://nasporte1.fun/dirifuvelyotkk.pdf
    • http://xapizokawe.iblogger.org/the_hollywood_reporter_next_gen_2018.pdf
    • https://cdn-cms.f-static.net/uploads/4374976/normal_600ae7e397c10.pdf
    • http://magic-world.site/74740620531dun9j.pdf
    • http://smartycredit.info/bulova_precisionist_movement8pnz0.pdf
    • https://cdn.sqhk.co/lerapuraroke/g8p8jhE/international_business_management_institute_wikipedia.pdf
    • https://cdn.sqhk.co/dafibuxoki/cr2kSyX/mini_pin_bowling_milwaukee.pdf
    • https://cdn.sqhk.co/depivuni/NLjaYvF/masterchef_fragman_71_bolum.pdf
    • http://zanatax.22web.org/gemejusuxizaramutevu.pdf
    • https://static.s123-cdn-static.com/uploads/4445104/normal_5ff3618351ea8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zidosozawok/blockchain_revolution_don_tapscott.pdf
    • http://nifofijaraja.epizy.com/28908724349.pdf
    • https://s3.amazonaws.com/wokesabisevo/rizobelagagepevife.pdf
    • https://s3.amazonaws.com/nemafu/idle_balls_hack_apk.pdf
    • https://s3.amazonaws.com/wusone/imperium_galactica_2_guide.pdf
    • https://s3.amazonaws.com/natewared/tinaretarufilukimix.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_off0000d9c9.bin
f5fc17622a24642e2a9ab78307099cd83ea628478e70a45a0d9b7e60dd48f980		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C9 5512 bytes
font_01_sfnt_off0000ec77.bin
cef899340969308447ac95079b7bc3240e1908c8e1835e3391290346fae71641		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC77 10184 bytes

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