Malicious PDF — malware analysis report

Static analysis result for SHA-256 629fa8ca67ed8a8f…

MALICIOUS

PDF

76.5 KB Created: 2021-03-24 15:21:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5ffb1e6c53a11f62851886b840212937 SHA-1: a1478cee89635fe8e53ed52945417a3d2aac349b SHA-256: 629fa8ca67ed8a8fbeb2c2681b22e24935d2435d122afe124c89dfaa2fa019ad
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing page or further malware. The document body, though heavily obfuscated, suggests a lure related to educational content, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=schoolyard+ecology+lab+exploring+biodiversity+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4445882/normal_5fffdae8cac41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459177/normal_5fd96cc317e57.pdfIn PDF document text
    • https://cdn.sqhk.co/wapogade/ogii0hi/sipejuwama.pdfIn PDF document text
    • http://viwenok.22web.org/57386337396.pdfIn PDF document text
    • http://autobuff.xyz/vuzez02e3z.pdfIn PDF document text
    • http://fidofawi.medianewsonline.com/2006_chevy_malibu_ss_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468534/normal_60230196c9793.pdfIn PDF document text
    • http://exampl1214.com/beats_studio_review_2019uuu2b.pdfIn PDF document text
    • https://cdn.sqhk.co/pategazikiw/ghhulqt/85653597732.pdfIn PDF document text
    • https://cdn.sqhk.co/balaragu/bKhfhfd/my_chu_virtual_pet.pdfIn PDF document text
    • http://desokore.medianewsonline.com/harry_potter_and_the_philosophers_stone_film_length.pdfIn PDF document text
    • http://idealslim-ordina.site/384143751090fl9j.pdfIn PDF document text
    • http://womenita.fun/pagifaranovikevesyyz6s.pdfIn PDF document text
    • https://cdn.sqhk.co/xepubijiko/kFRungc/fantasy_football_playoff_tie_breaker_espn.pdfIn PDF document text
    • http://fikosarodone.medianewsonline.com/natizo.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/natewared/like_one_battery_terminal_crossword_puzzle_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/68283944818.pdfIn PDF document text
    • http://segurixuzek.myartsonline.com/powerdirector_15_free_download_with_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/bitrix24_website_templates.pdfIn PDF document text
    • http://vujovitefazi.rf.gd/27106123015.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/nordictrack_proform_520_treadmill.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/55741882318.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_off0000ea27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA27 5900 bytes
SHA-256: c44f99cf6b32c5bb7f263ab4def26be41140a7c0dc6011a89144eb96e50931f5
font_01_sfnt_off0000fe49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE49 11288 bytes
SHA-256: 7984bae6f14093dee32bd53080b4bd1009bd1ea2d5132b4f8082b8780045cb2f

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