Malicious PDF — malware analysis report

Static analysis result for SHA-256 c36661d383a0df0d…

MALICIOUS

PDF

83.9 KB Created: 2021-03-24 23:11:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61640b2c8965d9a3bf71f8cb92e4ea38 SHA-1: 01e6f6c42df63e9947d5babab57b4f451fa9918b SHA-256: c36661d383a0df0df8b2a0416803256287ed51b9d233a145f86164673efca994
96 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, likely intended to trick the user into downloading further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing lure designed to lead users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dafemum.ru/strik?utm_term=tutorial+wpf+c%2523+espa%25C3%25B1ol+pdf+free+download
    • https://pozuxona.weebly.com/uploads/1/3/1/3/131398461/d162d1837a7.pdf
    • http://pifovabu.getenjoyment.net/wozekel.pdf
    • http://vibolofisef.mywebcommunity.org/understanding_analytical_hierarchy_process_springer.pdf
    • http://jipegogujozu.22web.org/pufigukaze.pdf
    • https://verumoxozuvije.weebly.com/uploads/1/3/1/4/131407377/6b7fa.pdf
    • http://rasojupalipi.22web.org/accidentally_in_love_kaskus.pdf
    • http://raxawevamavox.getenjoyment.net/chess_for_beginners_game_nest.pdf
    • http://tepugorotewole.medianewsonline.com/vesolinagevebibuwesu.pdf
    • http://powerpoint4you.ru/evolutionary_theory_of_government_definitioncvpt9.pdf
    • http://kexedeziferu.sportsontheweb.net/charter_remote_without_setup_button.pdf
    • http://dezlice.ru/637678261130a2dn.pdf
    • http://maxoranano.sportsontheweb.net/liste_aliments_avec_gluten.pdf
    • https://nadaroxiwe.weebly.com/uploads/1/3/4/6/134688146/lowadivepeguluk.pdf
    • http://detolenikalopaj.iblogger.org/indiana_university_wall_street_journal_ranking.pdf
    • https://gotowixupin.weebly.com/uploads/1/3/4/3/134393593/9562298.pdf
    • http://carbackseat.site/70694473277wiazq.pdf
    • http://senenetikoxikom.22web.org/63263077516.pdf
    • http://cashbackmoney.info/moto_g6_phone_user_manualqjrg2.pdf
    • http://teaapple.space/gone_michael_grant_tv_tropespq0mr.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ranitirunom.myartsonline.com/business_communication_today_13th_edition.pdf
    • http://gakilasefit.myartsonline.com/furawug.pdf
    • http://xejojud.epizy.com/how_to_write_an_introduction_paragraph_examples.pdf
    • https://uploads.strikinglycdn.com/files/4126c701-2f7e-49f6-b43a-ac4fca213fb8/12946346804.pdf
    • https://uploads.strikinglycdn.com/files/330a8a3c-20b8-4593-bc5e-8856694690d9/is_onyx_stone_valuable.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_off0000ff08.bin
53b8c722626ab1ba75cfd2c12ff7cba93d46e250624ceec786e2793be124ba73		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF08 4872 bytes
font_01_sfnt_off00010fbd.bin
ac3242e436a08cff87cc46f49075d76acc758cc75a927fa0c2b60cc16950bacb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FBD 21876 bytes

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