PDF malware analysis — malicious · 0f47bffc86c3b713

MALICIOUS

PDF

73.3 KB Created: 2020-08-30 23:07:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e319393be405a09aa90bfb00b23d5538 SHA-1: 3dbbc78e2dd54843558c1e799d62d05904d6b62f SHA-256: 0f47bffc86c3b713f62b23252286546b0fff4ca1b7238f6b4f5a40f1f9c92311

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains hosting other PDFs. The ML classifier strongly indicates maliciousness. The embedded URL is likely intended to lure the user to a malicious site, potentially for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://ttraff.ru/wix?keyword=comenda+lf322+lave-vaisselle+manuel
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0435/8940/2779/files/fizazototazewopul.pdf
- https://cdn.shopify.com/s/files/1/0428/9062/5191/files/gitazemepolowobowe.pdf
- https://cdn.shopify.com/s/files/1/0430/2074/6906/files/pratik_ingilizce_konuma_klavuzu.pdf
- https://cdn.shopify.com/s/files/1/0431/9592/4637/files/futewekevunobikesonojow.pdf
- https://cdn.shopify.com/s/files/1/0436/0581/9550/files/65008873502.pdf
- https://static.usrfiles.com/ugd/df4650_f5180b554c3c4f59aa4ddf68e9dda24f.pdf
- https://static.usrfiles.com/ugd/b8c837_b141bc19f86a429baf8c81e42b40d6e9.pdf
- https://static.usrfiles.com/ugd/b8c837_748595b44b634482ad4210d496bfe28b.pdf
- https://cdn.shopify.com/s/files/1/0430/0167/5939/files/67536313849.pdf
- https://cdn.shopify.com/s/files/1/0431/8180/1629/files/93147266627.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_off0000d7bb.bin` `4989c15275e5712294bdf5362688931e25a0cb3910888dd67c7388f7492e6fa3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD7BB	5248 bytes
`font_01_sfnt_off0000e993.bin` `3ec23a8bec1d9c32398d4872b5de77b40e1c28ac9544ec71bbd9f73ba4cbd069`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE993	15020 bytes

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