PDF malware analysis — malicious · 60817ab5dd3c9ac6

MALICIOUS

PDF

41.8 KB Created: 2020-08-30 08:00:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ad2546de1da8441a76d81ebb7e5194e4 SHA-1: fabf770b73591b20f8d6f299b702698b5d73d024 SHA-256: 60817ab5dd3c9ac6bc937db521a5d3ee53a581baef3fcb534b5459991210373f

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.ru'. The document body also contains this URL along with numerous other links to PDFs hosted on Shopify, suggesting a link farm or SEO spam tactic. The primary malicious URL is likely used to redirect users to further malicious content.

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=ingilizce+okuma+kitaplar%25C4%25B1+level+1+pd
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0435/4588/6884/files/lista_exercicios_tabela_periodica.pdf
- https://cdn.shopify.com/s/files/1/0430/8657/7828/files/taxufenukogedigokibelubu.pdf
- https://cdn.shopify.com/s/files/1/0430/1576/6177/files/nober.pdf
- https://cdn.shopify.com/s/files/1/0437/5642/1278/files/95617130654.pdf
- https://cdn.shopify.com/s/files/1/0432/0906/4607/files/elbow_bursitis_exercises.pdf
- https://static.usrfiles.com/ugd/353d00_d4412e0405d34868aef0d1a3d7393f75.pdf
- https://static.usrfiles.com/ugd/b8c837_a6560a86dbcf4117848d2f1d9867529d.pdf
- https://static.usrfiles.com/ugd/b8c837_1786e8a9697c40ec83e66de10965cb1e.pdf
- https://static.usrfiles.com/ugd/9dda13_7320e427e0c94ec69e7d6d85277c9767.pdf
- https://static.usrfiles.com/ugd/455f95_1275bbded8b0428b8e0d68c0c610058a.pdf
- https://static.usrfiles.com/ugd/b8c837_4f523f56af1f483e92e1b8739e9867df.pdf
- https://static.usrfiles.com/ugd/b8c837_07412429a325477597f10d210de4cc55.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_off000060e0.bin` `102c1f46152c0183f47cafa0c78fee0b075df933342c54c2f10e114c9f3e9d2d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60E0	5408 bytes
`font_01_sfnt_off0000733f.bin` `5bc44b5cd20121b7f31d298afa8800da1be8b57a460168a2e1c7290a593da888`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x733F	11944 bytes

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