PDF malware analysis — malicious · 24850f2f11773441

MALICIOUS

PDF

75.5 KB Created: 2020-12-30 03:43:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 91a2a62d7a6aaafd0129110311be6540 SHA-1: 76c63405bdc97061626b440047b88c1e7a23d9cb SHA-256: 24850f2f11773441fb14619abad3310ca668e5d8180611f55b25333d791e1a89

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, traffset.ru, which is likely used to host a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to downloading wallpapers, aligning with a phishing or malware delivery attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/strik?utm_term=hd+wallpapers+1080p+for+pc+windows+10+download PDF link annotation
- https://limosajabug.weebly.com/uploads/1/3/0/9/130969130/pasisovarebagave.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460057/normal_5fea2903cf3cb.pdfIn PDF document text
- https://xufiwelak.weebly.com/uploads/1/3/1/1/131164558/4ce7ead41c94b5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4411696/normal_5fd97a3f046b4.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/e4dfe9d2-24a9-49f0-adb3-9473737b02e2/39206991327.pdfIn PDF document text
- https://s3.amazonaws.com/sigobija/arthur_miller_biography.pdfIn PDF document text
- https://s3.amazonaws.com/wofaxil/cpl_renewal_michigan_in_oakland_county.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1009c305-4075-471b-bde0-3809dfbd54e1/74440154544.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/08348826-be42-4376-8439-558db3af0f25/kibopovimoz.pdfIn PDF document text
- https://s3.amazonaws.com/metakibeme/738449128.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e912.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE912	5592 bytes
SHA-256: `8b1dc2d61332a098de8b1a5da8fe5f73d064e64347d97974b4cecca85bd7b9c5`
`font_01_sfnt_off0000fc44.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFC44	10936 bytes
SHA-256: `712375789d7e42a7fbc34ecc24c3e0ee092def034279697d7c10b19959e2c770`

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