PDF malware analysis — malicious · 99dae34f6285adc4

MALICIOUS

PDF

61.5 KB Created: 2020-11-26 00:34:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b2b07a57ed6a051de496bf5d1ac28003 SHA-1: 1a78aa8219d9294cff649c315d166af8f564a6ae SHA-256: 99dae34f6285adc4ce4896c5ed8fdececa74a774d2a80db56d3503a46ccb7fcd

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains heuristics indicating it is a link farm and has been flagged as malicious by ML classifiers and ClamAV. The embedded URL points to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Piggyback final fantasy xv pdf'.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 5

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.
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=piggyback+final+fantasy+xv+pdf
- https://cdn-cms.f-static.net/uploads/4403406/normal_5fa7e59abc351.pdf
- https://cdn-cms.f-static.net/uploads/4382412/normal_5fb9a21da3504.pdf
- https://fuloremazugad.weebly.com/uploads/1/3/4/3/134356453/1349086.pdf
- https://cdn-cms.f-static.net/uploads/4480142/normal_5fa66da108796.pdf
- https://cdn-cms.f-static.net/uploads/4393506/normal_5f9257444d772.pdf
- https://cdn-cms.f-static.net/uploads/4378830/normal_5f8b98278f2bd.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/b5717a63-7eb0-4d90-8e9c-34420abef3dd/fagusupura.pdf
- https://s3.amazonaws.com/salosibejodod/guwigup.pdf
- https://uploads.strikinglycdn.com/files/e746413f-8e17-4bc9-b770-d5a7c5fdd2e9/92190604985.pdf
- https://s3.amazonaws.com/kimoweworape/53438776151.pdf
- https://uploads.strikinglycdn.com/files/81e5af96-06f7-44ec-965f-92bcce3d9d32/burobazawoju.pdf
- https://uploads.strikinglycdn.com/files/f74df097-9669-44fe-9e9f-6b76a03da7f5/febujawiw.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000b169.bin` `563a04a3cf46ab0348e12ac25328bd451b904f0ac34cc6c51a471432cb48d638`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB169	5660 bytes
`font_01_sfnt_off0000c4e2.bin` `70b896e541f8daf188ab574ee3d666d152c22d4a21f69ddbd2dadb8d64f82576`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC4E2	10960 bytes

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