Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a8e89ee6a8e422a…

MALICIOUS

PDF

75.9 KB Created: 2021-03-29 17:04:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72a3055295f4fe1be31d79bb450e3f18 SHA-1: d195f5ec5c8ae4b815dd4a4a90b4c475e740acf0 SHA-256: 8a8e89ee6a8e422a1524482cdbcd101f3f4aa2d5be19b4ffd060c87efd4c37c1
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'botokaw.ru', which is likely part of the phishing lure. No scripts were extracted, but the presence of the malicious URL strongly suggests a phishing attack.

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://botokaw.ru/strik?utm_term=farewell+my+lovely+cast+1944
    • http://mobeditobaxul.scienceontheweb.net/lituwikigikasexalakukus.pdf
    • http://luwimifamofuper.iblogger.org/beauty_and_the_beast_jazz_piano.pdf
    • https://cdn-cms.f-static.net/uploads/4391000/normal_6021549021ab5.pdf
    • https://cdn-cms.f-static.net/uploads/4412887/normal_60221799b2338.pdf
    • http://lujuput.22web.org/197428906.pdf
    • http://kazerurido.iblogger.org/29590883223.pdf
    • http://bafiselavanebep.mywebcommunity.org/bible_interpretation_books.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vuforewebub/left_sided_neglect_worksheets.pdf
    • http://gefaribabati.rf.gd/windows_administrator_l2_interview_questions_and_answers.pdf
    • http://kudogato.rf.gd/mezumivofat.pdf
    • https://uploads.strikinglycdn.com/files/cd098b2d-d4ad-4540-90c6-57fbade3d8a1/basketball_offense_vs_1-3-1_zone_defense.pdf
    • https://uploads.strikinglycdn.com/files/469190ba-751b-42e1-b509-69f69a5138d0/metamorphosis_kafka_movie_online.pdf
    • http://sazevaxorofezag.epizy.com/guidelines_for_comprehensive_sexuality_education_k_12.pdf
    • https://s3.amazonaws.com/gujutavevive/64109702080.pdf
    • https://s3.amazonaws.com/wegugus/jikuzulivo.pdf
    • https://uploads.strikinglycdn.com/files/be718b31-2f8a-4e96-9663-ff3e29cfe292/11406277280.pdf
    • http://xogowakowokavuw.rf.gd/politische_philosophie.pdf
    • https://uploads.strikinglycdn.com/files/ce4aaa84-626e-4365-9e4d-06d1ed4204f9/garmin_gpsmap_78sc_user_manual.pdf
    • http://zerimokima.rf.gd/pathfinder_2e_animal_companion_feats.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_off0000e8b6.bin
e03d6f3ed523bc412961927c4e03849b21bc57eee4838dbdc6e4425deef8f17e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B6 5452 bytes
font_01_sfnt_off0000fb4d.bin
1a826c4ba331d092071b317d07d6a6957e18bd7a021bc344e64e07e7436482f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4D 11256 bytes