Malicious PDF — malware analysis report

Static analysis result for SHA-256 84c4dedceb0afb30…

MALICIOUS

PDF

70.2 KB Created: 2021-03-19 08:07:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40809f9fb7452a24a9b2dca1ddbd9225 SHA-1: 726550524fd08bc667ab8593cb489c69db2d8453 SHA-256: 84c4dedceb0afb306757f63e4f6eeb219bb53f4693cf86d122a805e190f1f4e6
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for users to download further malicious content or engage in phishing. No scripts were extracted, but the PDF structure and embedded URI suggest a phishing or malware distribution attempt.

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://bologen.ru/wix?keyword=the+complete+book+of+five+rings+kenji+tokitsu+pdf
    • https://cdn.sqhk.co/kevovevude/icjfMA8/jaget.pdf
    • http://felofedawapu.22web.org/honda_lawn_mower_registration.pdf
    • https://jewezuwexokuj.weebly.com/uploads/1/3/4/7/134717424/4478472.pdf
    • http://motugisimugod.iblogger.org/shed_plans_uk.pdf
    • https://simisasokudu.weebly.com/uploads/1/3/4/2/134235492/ladab.pdf
    • https://cdn.sqhk.co/xezafube/adBfiil/infection_control_policy_for_covid_19.pdf
    • https://cdn-cms.f-static.net/uploads/4374207/normal_601304e90e038.pdf
    • http://lugodapamaj.mygamesonline.org/ruger_mini_14_scope_mount_installation.pdf
    • https://cdn-cms.f-static.net/uploads/4415740/normal_6039d24321f55.pdf
    • https://cdn-cms.f-static.net/uploads/4388174/normal_5fd978e9dbc8b.pdf
    • https://cdn-cms.f-static.net/uploads/4489730/normal_5fea30af1aa6d.pdf
    • https://balikawe.weebly.com/uploads/1/3/4/6/134659528/gijamanodaxege.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vujiwexamofone.rf.gd/nirudipafaroworixoji.pdf
    • https://s3.amazonaws.com/zozofufulolig/gubewudewat.pdf
    • http://rosevasejila.myartsonline.com/reviews_of_sig_sauer_p938_sas.pdf
    • http://jepelevewo.epizy.com/mugitiledegasavuk.pdf
    • http://vejidot.epizy.com/viluxetinupimexevutu.pdf
    • https://s3.amazonaws.com/gurafoga/90874969790.pdf
    • https://s3.amazonaws.com/wunojipu/former_soviet_news_agency_crossword_clue.pdf
    • https://s3.amazonaws.com/mukutud/graco_milestone_review.pdf
    • http://miganuvag.myartsonline.com/dakuvodebojezeto.pdf
    • https://s3.amazonaws.com/wewiro/lagasixorunaj.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_off0000d441.bin
660b204ac92468becf323086008c38dc15cdfcb51ea946bba14cddce6e118b1a
pdf-font-stream PDF embedded font (sfnt) at offset 0xD441 5648 bytes
font_01_sfnt_off0000e75a.bin
3af0969977eafa1ec8baf015b9454c79d2bf022f07787ab54381379ac2f90b8e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE75A 10060 bytes