Malicious PDF — malware analysis report

Static analysis result for SHA-256 9271c87dd5945366…

MALICIOUS

PDF

96.7 KB Created: 2021-04-03 21:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: b3d2647749f27e5d910d99e1b5a5bd2e SHA-1: b0d01612786ceeef6027556fc90beffe72b64a48 SHA-256: 9271c87dd5945366c0efb6740d9c3debd614b539bfb339f16e42076ea199a79b
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'botokaw.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to legal documents, further supporting a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/award?keyword=magyar+alapt%25C3%25B6rv%25C3%25A9ny+pdf PDF link annotation
    • https://cdn.sqhk.co/letarezetap/CsaOhdD/77800013952.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/gcvRigj/sanimujujirelub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380068/normal_60048d75513bd.pdfIn PDF document text
    • https://cdn.sqhk.co/dukizukijire/4oidggo/rajasthan_defence_academy_in_jaipur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413473/normal_6011aea9114b2.pdfIn PDF document text
    • https://cdn.sqhk.co/godezixibufo/IFZ4Gjh/78403856165.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501996/normal_605442713e1e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374189/normal_6011977b17efe.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzutuse/jzhcjjC/972095661.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417325/normal_60272066aac73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402944/normal_601c6ec997f51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500668/normal_606491e96b59e.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluzagile/jdSegfY/umc_covid_testing_las_vegas.pdfIn PDF document text
    • https://cdn.sqhk.co/puwipaneke/ghZhhJo/brain_for_monster_truck_2.pdfIn PDF document text
    • https://cdn.sqhk.co/fupupusamun/fFBSWHr/marumazojibipetuvonudi.pdfIn PDF document text
    • https://cdn.sqhk.co/ropobemuma/bu0TvWe/xanoxadirivi.pdfIn PDF document text
    • https://cdn.sqhk.co/tefebenum/chgigKJ/sidhu_moose_wala_new_song_badmashi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kotutuvotijol.rf.gd/escape_room_level_34_answer_key.pdfIn PDF document text
    • http://bujubigakokuv.epizy.com/gafipinunamadizawutumo.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/cidco_lottery_online_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/53465496394.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/weber_bbq_cover_spirit_e-210.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/butler_university_tuition_remission_form.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/piciul_de_alphonse_daudet.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_off00013901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13901 5476 bytes
SHA-256: ed552ac08125ad04fdb3c124d40a6dd95e7a7b0ab6c8a38144c523cceb84ce7e
font_01_sfnt_off00014b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B4E 13308 bytes
SHA-256: 8ceea2819b905394c2d5a7725ddac9a40a9d6ef474647dc051aaf3e90f57f5bb

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