Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1f90f8b43ab519f…

MALICIOUS

PDF

86.2 KB Created: 2021-03-22 02:50:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5ca65fe992f5e3f0dbaa6b233f5442a SHA-1: e93b845c53a2f47b802adf684be00e5824153db5 SHA-256: e1f90f8b43ab519f5f74b5e74b04d0a3e0e2265511416bed97a4dc9cb6c9f523
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, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body's content, while obfuscated, includes metadata suggesting it was generated by wkhtmltopdf and references 'Angara kavya kannada song', possibly as a lure.

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://jumiwimov.ru/123?utm_term=angara+kavya+kannada+song
    • https://cdn-cms.f-static.net/uploads/4455645/normal_604ab34d6389c.pdf
    • http://sevezor.scienceontheweb.net/60869955405.pdf
    • https://cdn.sqhk.co/kawinojos/1OigAhg/jesojolafos.pdf
    • https://static.s123-cdn-static.com/uploads/4417214/normal_5ff81b235fc44.pdf
    • http://tikopariwoxa.mygamesonline.org/ratojaxivapixuvarupikos.pdf
    • https://static.s123-cdn-static.com/uploads/4468551/normal_5ff54be00368f.pdf
    • https://static.s123-cdn-static.com/uploads/4476294/normal_5fcd7e1cc4471.pdf
    • https://cdn.sqhk.co/vovusupa/jfiibB0/31782695748.pdf
    • https://cdn.sqhk.co/pomorezolo/hjgiiaw/xudubemowilejobodozawut.pdf
    • https://cdn-cms.f-static.net/uploads/4486984/normal_6019a2b0ae54f.pdf
    • https://cdn-cms.f-static.net/uploads/4412575/normal_602141cbf33a8.pdf
    • https://cdn-cms.f-static.net/uploads/4412403/normal_604ef9dbe9d33.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://widepidaba.atwebpages.com/bibixikolejifojix.pdf
    • https://s3.amazonaws.com/perurulexi/resto_shaman_leveling_guide_classic.pdf
    • http://nudoritane.atwebpages.com/2221038580.pdf
    • https://s3.amazonaws.com/pukiza/rosesaxemovep.pdf
    • https://s3.amazonaws.com/mesixadelomomo/crash_cart_checklist_template.pdf
    • https://s3.amazonaws.com/dazemi/piano_accompaniment_sheet_music_free.pdf
    • https://s3.amazonaws.com/jedaxopopuko/coupon_template_microsoft_publisher.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_off00011642.bin
e55a55254c2573f6460245941b2ede29b49d5e9cafa274c1c7a78b501a1676de
pdf-font-stream PDF embedded font (sfnt) at offset 0x11642 5176 bytes
font_01_sfnt_off000127fe.bin
a5a9ef829744bb9cd646461ae9d97eb24f89f4e559331ecabffaaf3d613eb8b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x127FE 10872 bytes