Malicious PDF — malware analysis report

Static analysis result for SHA-256 0946d098573ff5ed…

MALICIOUS

PDF

74.0 KB Created: 2021-03-26 10:15:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88cfaf2ace637c20bff26bf92c21f851 SHA-1: 9ea6cff054107628c452cf303e45bb705e50731e SHA-256: 0946d098573ff5ed39cafb08f253dfe6a6a718cefa2d332b73dbafdf41f28bcf
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to educational materials, aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://ponafet.ru/wix?keyword=ap+calculus+ab+examination+tenth+edition+answers
    • http://tibetterrier.ru/406476326491wsp2.pdf
    • http://lazinuno.scienceontheweb.net/78936446272.pdf
    • http://snegny.com/mapafowovisovizafuxurwwkb.pdf
    • http://bitalotava.scienceontheweb.net/hermeneutica_augustus_nicodemus.pdf
    • http://fukuzowi.sportsontheweb.net/official_arduino_starter_kit_book.pdf
    • http://123dutch.com/lidokakekebokimizvaue.pdf
    • http://mrt-zdes.ru/fejujibarakexi2io27.pdf
    • http://kedisuli.iblogger.org/tc_helicon_mic_mechanic_2_vocal_effects.pdf
    • https://static.s123-cdn-static.com/uploads/4412183/normal_5ff3eccd309d7.pdf
    • http://turuluwugebig.22web.org/39362287377.pdf
    • http://hookup756.fun/68596654831o16i2.pdf
    • https://cdn-cms.f-static.net/uploads/4460477/normal_60112dd37d126.pdf
    • http://magnitoli-2ekran.site/93959030740pz6ou.pdf
    • http://joy-todays.online/texebirusiduddblh.pdf
    • https://cdn-cms.f-static.net/uploads/4382790/normal_601de223eebf8.pdf
    • http://vitalia-transports.com/werewolf_movies_and_tv_shows_2020unqz6.pdf
    • http://goldstein.capital/system_analysis_and_design_quiz68768.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lumosaneja.onlinewebshop.net/soft_skills_notes.pdf
    • http://viwumizebawekez.epizy.com/37963829318.pdf
    • http://temodorofeg.atwebpages.com/capricho_arabe.pdf
    • http://pefogitoveni.epizy.com/32281409829.pdf
    • http://kizifisen.rf.gd/bopiwujinuzubudotox.pdf
    • http://vujipopeb.rf.gd/bajirao_mastani_full_movie_720p_123mkv.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce2a.bin
4ec2f6c87531fb459c41b277e84be3183ccd4c8c523f396f76a4092c82ebdcbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE2A 5604 bytes
font_01_sfnt_off0000e111.bin
cf1b9d81cf458372d2ab1ed2c4090b8b2866c165f17d226d3a09c800cf5c3f45		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE111 10276 bytes
font_02_sfnt_off00010444.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10444 16204 bytes

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