Malicious PDF — malware analysis report

Static analysis result for SHA-256 26c1f03eb4458b2b…

MALICIOUS

PDF

75.8 KB Created: 2021-03-22 14:45:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 7d8b5b8d095b70591ac3e77062f81af7 SHA-1: 9037a44a4f94700f33b93921c231554966f8de32 SHA-256: 26c1f03eb4458b2b10cc041c39905dab0955c4fd93c1223ed146f624aef92563
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF as malicious. The document body, though partially corrupted, suggests a lure related to self-help books, which is a common tactic for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/aws?utm_term=best+self+help+books+for+anxiety+and+overthinking PDF link annotation
    • http://nizuloxodiza.iblogger.org/entrepreneurship_and_small_business_management_study_guide.pdfIn PDF document text
    • http://blubadgehelp.net/59879183820tx7w0.pdfIn PDF document text
    • https://cdn.sqhk.co/zugivakizo/eAcjgUs/kafom.pdfIn PDF document text
    • http://inertbhjbj.ru/21026242292b526r.pdfIn PDF document text
    • https://cdn.sqhk.co/davusegeb/aMrjage/xuwenuvuvise.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/ferjehe/snes_games_best_to_worst.pdfIn PDF document text
    • https://cdn.sqhk.co/demanajinu/dngjf8t/52162739909.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ebe1266-f5e2-4d68-9ebf-87e187eb9527/rifoxijoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9819376d-0b2b-479f-936b-cdb1fe29bac4/jipupazuzawofokibi.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/80210134524.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/50665909833.pdfIn PDF document text
    • http://segalemu.epizy.com/nomeg.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/garmin_vivofit_2_jr_star_wars.pdfIn PDF document text
    • http://retexibew.rf.gd/find_the_camel_alzheimer_s_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/cheat_engine_6._7_mega.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/59604109650.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/the_red_tent_miniseries_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/fairy_tail_anime_tv_series.pdfIn PDF document text
    • http://jepexafowuxa.epizy.com/nibuvowinakonuro.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/siruvar_neethi_kathaigal_free.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_off0000e96c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96C 5788 bytes
SHA-256: 108065b2522ecbe3403a2a9765dec4905958d0e723c10eebaa9f7ff2b45ab44a
font_01_sfnt_off0000fd1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD1F 10668 bytes
SHA-256: df858adf2249754d22630ce74286a3002c45be7e0185c81349d7a8abd43c096f

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