PDF malware analysis — malicious · 18b40c85a666f007

MALICIOUS

PDF

66.6 KB Created: 2020-11-24 18:08:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 93506ef462185e5b8f7d068bda900872 SHA-1: 7aa5d01bdd7bedec8b74a84d831c7d5388f0b094 SHA-256: 18b40c85a666f007efb2e3fcc92efa31b1f74d0c779b7633b4045d18cea37dec

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a large number of external links, many pointing to other PDF files, suggesting a link farm or redirection mechanism. The primary URL, https://traffnew.ru/strik, is likely used to redirect the user to malicious content, possibly related to the 'roblox jailbreak scripts pastebin 2020' lure present in the document's metadata.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/strik?utm_term=roblox+jailbreak+scripts+pastebin+2020
- https://punotajevi.weebly.com/uploads/1/3/4/2/134266109/zupavepade.pdf
- https://cdn-cms.f-static.net/uploads/4415546/normal_5f9655f2dab13.pdf
- https://cdn-cms.f-static.net/uploads/4373986/normal_5f9074a9ded9f.pdf
- https://cdn-cms.f-static.net/uploads/4488580/normal_5fb5efad9651f.pdf
- https://cdn-cms.f-static.net/uploads/4368506/normal_5f9058d9681cb.pdf
- https://cdn-cms.f-static.net/uploads/4470211/normal_5faa104795515.pdf
- https://cdn-cms.f-static.net/uploads/4384036/normal_5f94b3e887840.pdf
- https://cdn-cms.f-static.net/uploads/4368999/normal_5f8bd6ac36c9a.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/gofiguj/wetuwokutito.pdf
- https://s3.amazonaws.com/ladojenefe/bizelunobiwugulozase.pdf
- https://s3.amazonaws.com/vovopafubipu/84245037978.pdf
- https://s3.amazonaws.com/xalasawu/lake_mary_dmv_driving_test.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_off0000c90d.bin` `05a05c282b64dc1c176056b0d38334e856974717d7b32bc3660510c4c2f22bb4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC90D	5556 bytes
`font_01_sfnt_off0000dc0d.bin` `72fd7cdf8e1eaaeef15c5dbdb6f13a8491ab7e7f0987d1d6d394b84827cd5b9d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC0D	9920 bytes

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