Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fa04942bf1e2a10…

MALICIOUS

PDF

69.0 KB Created: 2020-12-19 00:34:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1996eb78c47fd1622e34e37c9f4e1620 SHA-1: d30042144f3c6c7f770b8ee5d2c6738aea587f44 SHA-256: 4fa04942bf1e2a10f84e063ccf1bf5a7873f9ac3850bb9385043c8fa9c33ac0f
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, which points to a suspicious domain. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. The embedded URL is the primary indicator of compromise, suggesting the document is a lure for a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffnew.ru/strik?utm_term=trim+fit+keto+pills+reviews
    • https://letotanuvimipe.weebly.com/uploads/1/3/4/5/134598603/d4fc0f6bb4137aa.pdf
    • https://boxatikavizag.weebly.com/uploads/1/3/4/6/134680825/wijiditemogiferuk.pdf
    • https://cdn-cms.f-static.net/uploads/4404500/normal_5fda849207fd2.pdf
    • https://cdn-cms.f-static.net/uploads/4371265/normal_5f8aef1d8a0a6.pdf
    • https://cdn-cms.f-static.net/uploads/4495254/normal_5fb69203186dd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe15a9173fb5383b69fa98/1606292906214/uso_del_gerundio_en_espaol_fundeu.pdf
    • https://static1.squarespace.com/static/5fc0ef906b97992eb55c42ef/t/5fcd93f49aa2de0c64ad7a02/1607308278127/jegufitilegixola.pdf
    • https://uploads.strikinglycdn.com/files/49f48f38-0ab0-46cb-bfce-5782ff30a9d1/zexujufujajosodu.pdf
    • https://s3.amazonaws.com/wazorixekunafob/gobamupazizuzekeke.pdf
    • https://uploads.strikinglycdn.com/files/182f8a8a-485e-48c9-8af5-05e566264697/fulasemixovosopesebuzexan.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_off0000cff0.bin
e651b07b03b479e1b3e91ed74ab88e036d1c0505c290c5546b12fc64d73dd9e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF0 5000 bytes
font_01_sfnt_off0000e0f9.bin
cfba7008ece566461db8bae461779c1db2a23abf630458783d7bc16fe5e3b177		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F9 11324 bytes

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