Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ce689154284897b…

MALICIOUS

PDF

77.4 KB Created: 2021-03-03 09:13:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef7529cac591230174e23453fcf1958c SHA-1: 7e9162598bf5c312d2955d407f47f764b7a5c773 SHA-256: 7ce689154284897bdd3d19db4293d6d76932269e4934d2b5ff7f53a9a1659045
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and ClamAV detection confirms its malicious nature as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to technical support or device troubleshooting. The presence of embedded URLs and the ML classifier's high confidence score indicate a deliberate attempt to deceive the user into visiting a malicious site.

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://bologen.ru/123?utm_term=how+do+i+reset+my+samsung+refrigerator+control+panel
    • https://cdn-cms.f-static.net/uploads/4381735/normal_602979d0d34ab.pdf
    • http://hookup154.fun/25929068803ubgql.pdf
    • https://cdn-cms.f-static.net/uploads/4444123/normal_5fe77c709d8ce.pdf
    • http://tibagisuminove.sportsontheweb.net/39750914222.pdf
    • https://cdn-cms.f-static.net/uploads/4486199/normal_600d3e598dc96.pdf
    • http://bagomebefekixob.getenjoyment.net/wamarilopu.pdf
    • https://static.s123-cdn-static.com/uploads/4380883/normal_5ff516a71a95c.pdf
    • https://cdn-cms.f-static.net/uploads/4393635/normal_60275aa435ed8.pdf
    • https://cdn-cms.f-static.net/uploads/4445531/normal_602480bf63831.pdf
    • https://static.s123-cdn-static.com/uploads/4370777/normal_5fcd5daa0d0af.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jokosen.atwebpages.com/d-in_unlock_tascam_cd-rw900sl.pdf
    • http://nejesezape.myartsonline.com/molodipikadirumulozok.pdf
    • http://ralivapoked.epizy.com/health_canada_adverse_event_reporting_guidance.pdf
    • http://xavitemis.rf.gd/movies4me._cc_app.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_off0000f0bf.bin
d933e19698099a5384b1c7a9a6ca100220bce94484b868f2a1f8f265c4f364aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BF 5632 bytes
font_01_sfnt_off000103e6.bin
61957fe6be38e37cf6c61c3ef1ba561c282e6029199463edcfaea29407687960		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103E6 10532 bytes

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