Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ace46830eae193f…

MALICIOUS

PDF

56.1 KB Created: 2020-11-29 02:53:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a0da39b91ff18bebdcd68420f2fa72e SHA-1: 1e8d02b56662698e359b641cf3cd1eb037e91f17 SHA-256: 9ace46830eae193fcf3dca567b447581e062b4ce8fb33f3b79ad3ec755d1bc84
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when clicked, directs the user to a suspicious domain. The document body, though heavily obfuscated, appears to be a lure related to a game download. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://trafficel.ru/aws?utm_term=metal+gear+solid+3+pc+version
    • https://cdn-cms.f-static.net/uploads/4388178/normal_5fa3123017f10.pdf
    • https://dujenavu.weebly.com/uploads/1/3/4/3/134366251/gotanekagon.pdf
    • https://kodepukezaxa.weebly.com/uploads/1/3/4/6/134665187/fdeb4.pdf
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/5300225.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d4854613-cda2-49ef-bd35-a9d49c1613c6/1403955366.pdf
    • https://uploads.strikinglycdn.com/files/efb07d50-7e5d-4810-b8e2-627a03ee14e2/50449459375.pdf
    • https://s3.amazonaws.com/pozokimepe/lavareb.pdf
    • https://s3.amazonaws.com/gogonof/99590379230.pdf
    • https://uploads.strikinglycdn.com/files/8385e869-c2b9-48e9-a6a5-d1b9135bbcfc/bikomerugewuzusajuj.pdf
    • https://s3.amazonaws.com/zoxewudunigus/principles_of_business_management.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_off0000a51d.bin
14ed6a60fa8f0826ebf5101a2ab60057294aa8712cb91143fd4cf2647b7c656b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA51D 5472 bytes
font_01_sfnt_off0000b7da.bin
2ccd0b44c65603b5510e8b68336f8612c257a9217e6ebf1b20e136a34f58aca5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7DA 8280 bytes

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