Malicious PDF — malware analysis report

Static analysis result for SHA-256 d06b9876a33377ba…

MALICIOUS

PDF

83.8 KB Created: 2021-05-21 16:41:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42e22211d0415555b36fe1d93a8b8058 SHA-1: 2746da24c0546c27c27406d6745a75103a64a83b SHA-256: d06b9876a33377bad30185ecf9dbd10ee883db5508f1b9b73edf6bcaf049a113
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by directing them to malicious content.

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=la+danza+de+la+muerte+stephen+king+sinopsis
    • https://static.s123-cdn-static.com/uploads/4413705/normal_600692a4a87a8.pdf
    • https://cdn-cms.f-static.net/uploads/4443325/normal_6039b6aad50b0.pdf
    • https://cdn-cms.f-static.net/uploads/4370561/normal_606e47cfe3c8b.pdf
    • https://cdn-cms.f-static.net/uploads/4376609/normal_604d2c5211a60.pdf
    • https://cdn-cms.f-static.net/uploads/4385206/normal_5fe66ca92bbb2.pdf
    • https://static.s123-cdn-static.com/uploads/4476578/normal_5feb0f5d2dea6.pdf
    • https://cdn-cms.f-static.net/uploads/4449004/normal_600f766dea5e9.pdf
    • https://cdn-cms.f-static.net/uploads/4412161/normal_605d7386ac441.pdf
    • https://cdn-cms.f-static.net/uploads/4367301/normal_60547b489accb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/099e1a67-f532-4e2f-8407-2ba629c0439b/41256283428.pdf
    • https://s3.amazonaws.com/xeruxaxer/gokaberijexopaloti.pdf
    • https://s3.amazonaws.com/pirofopafu/insider_guides_brisbane.pdf
    • https://uploads.strikinglycdn.com/files/b34d92b7-af8c-4eb9-a2be-76705d70088f/speakeasy_bar_nyc_phone_booth.pdf
    • https://uploads.strikinglycdn.com/files/6a69b72f-ae12-4228-b449-2827b4aeba72/konalolikatekebaveka.pdf
    • https://s3.amazonaws.com/masevewi/jaxida.pdf
    • https://s3.amazonaws.com/midaguvimabof/80552560963.pdf
    • https://s3.amazonaws.com/tamobalasu/13749243724.pdf
    • https://uploads.strikinglycdn.com/files/1e380e24-4662-4b74-819d-985a92aa1ab3/40047969680.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eff2.bin
9dd459b892d298e0c847aa9e5001bbdf1dd12776d5851692a4a09e385933051a
pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF2 5428 bytes
font_01_sfnt_off00010246.bin
2e1faaadddcba15861fc089fb42c87450090d66eb6290d0ee66a2ad4077e19ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x10246 12548 bytes
font_02_sfnt_off00012aac.bin
71fec8a3adfe41455811528c654ef740a0d97889ddd19e39e153b04b7507b7f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x12AAC 16160 bytes