PDF malware analysis — malicious · d04baed72adfc24d

MALICIOUS

PDF

67.6 KB Created: 2020-12-17 20:00:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20

MD5: cb6248bd2fba54cf9bb3cac4f8770c2d SHA-1: 8a45bd0e398c3a4d9f7dd6b3957f956e6bb54e62 SHA-256: d04baed72adfc24d151ca710cebc2e7d0fc251f949366e27b75ea06a021fe299

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM' pattern suggesting an attempt to generate traffic to various sites. The ClamAV detection and ML classifier further indicate malicious intent, likely related to phishing or distributing further malware. While no scripts were directly extracted, the PDF structure and embedded URIs point towards malicious redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.7772

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
External URI info PDF_URI

PDF contains an external URL action
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://trafftec.ru/aws?utm_term=good+morning+photos++beautiful PDF link annotation
- https://static.s123-cdn-static.com/uploads/4426407/normal_5fc4f954de16e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371498/normal_5f9ea61f88657.pdfIn PDF document text
- https://mizewipexu.weebly.com/uploads/1/3/4/6/134609608/xupokonewelozugolob.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382618/normal_5fbb67437399e.pdfIn PDF document text
- https://zejebamusij.weebly.com/uploads/1/3/2/3/132302936/tilitu-desufewogu-xoxesizewev.pdfIn PDF document text
- https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/zalelowagus-duvelofeve.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366964/normal_5f87825701233.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386333/normal_5f8d133cc63c8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378846/normal_5f91b21942a61.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4414871/normal_5fc501edf0586.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/19bf34eb-eb7e-47e4-9cc2-5bf47ca4f4f0/pokemon_altered_emerald_starters.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0a715a51-14ad-4ee0-8e75-e0947c8ea55a/orientaciones_selectividad_andalucia_2019_lengua.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/242b0721-309d-475c-b7de-f48cb386064a/11052684198.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0ec90b4a-3c5a-4996-b38d-91246d18891f/88841184067.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/eaa0dd0d-bbf4-48a9-bc55-add058d04d30/33200894487.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7da28326-7344-4cfd-bfba-3b69e4678e7e/topibofuvi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fa2da5e5-8a6b-41fd-a3e3-fd6e4e6bcbbe/redstone_gate_hours.pdfIn 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_off0000e485.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE485	5624 bytes
SHA-256: `880b42f7501f47f84dcb6ec9c0864e532ab5cb5df0d6e724e2e0b460ee7a3b66`
`font_01_sfnt_off0000f773.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF773	3652 bytes
SHA-256: `ad03cb59778714d7dc4bd2da513b33c5b6ba7ddb90423dad33bc4abd21d59be7`

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