PDF malware analysis — malicious · 9d1b805eecfa23d4

MALICIOUS

PDF

69.3 KB Created: 2020-12-24 06:52:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14

MD5: 0243c8998c32115d28ac94674377bc0e SHA-1: 2e72ad0f83ba47101a19ed5c54b3fe978f8ca544 SHA-256: 9d1b805eecfa23d40a154a26c6efe4b87d885da85f7aaca89022ffc7244d0c3f

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafffe.ru', which is presented to the user as a lure for 'Screen crack hd wallpapers'. This suggests a phishing or malware distribution attempt.

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://trafffe.ru/aws?utm_term=screen+crack+hd+wallpapers PDF link annotation
- https://static.s123-cdn-static.com/uploads/4444622/normal_5fcda2d16949e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4469638/normal_5fd8cb50048ef.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4403806/normal_5fe40ffb0eea6.pdfIn PDF document text
- https://lebotisoko.weebly.com/uploads/1/3/4/5/134597635/117940.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412394/normal_5fbab137a65a4.pdfIn PDF document text
- https://tuxitusonodedin.weebly.com/uploads/1/3/0/8/130873989/1187da4.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4368486/normal_5fcedc215ae54.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/pafexegud/30137121463.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4bd1ad23-89b6-46c4-83fd-e36adff4024b/tailwind_black_font_free_download.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3678d20c-8f36-43c1-8663-6d6078792cbb/35038252739.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3a181ff2-9433-4150-a5e0-306df2a12234/64819467930.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_off0000d1ee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD1EE	5420 bytes
SHA-256: `8146d35efa01c0eb933bbe27c5eca939d52c0761ffa6bb8a5bad1a069421c471`
`font_01_sfnt_off0000e469.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE469	10532 bytes
SHA-256: `1adf26dd8aa00acf0dc1f0ca60abdb632d8b3de6280c520ff078d00e07e04d34`

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