PDF malware analysis — malicious · 257e72e901ab2707

MALICIOUS

PDF

34.7 KB Created: 2020-08-29 04:41:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: d67321bd150e94181cd00250b5fbecb2 SHA-1: 0163147c0524cf1877647b9f1cb8961b72a70408 SHA-256: 257e72e901ab27078d95fa8ddb6d163ba815c82724b97ec3f18ad961815556ad

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious by a machine learning classifier with high confidence. It contains a large number of embedded links, many of which point to a redirector URL (ttraff.cc) known to host malicious content. The document body itself is largely unreadable binary data, but the presence of the redirector link and the link farm heuristic strongly suggest a phishing or redirection attack.

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.cc/wix?keyword=le+bateau+de+monsieur+zouglouglou+pe
- https://static.usrfiles.com/ugd/b8c837_69474a4c75ad4a7082ffc3506eac9552.pdf
- https://static.usrfiles.com/ugd/b8c837_fbf294685cf645a9b97a4256325a8763.pdf
- https://static.usrfiles.com/ugd/b8c837_13cff52808c341408d9d2ff4f2ff97d2.pdf
- https://static.usrfiles.com/ugd/b8c837_0f0e8aff0f9c431a95294638b001324b.pdf
- https://static.usrfiles.com/ugd/b8c837_c3f4c6d7080148f8996b7c5390f902cd.pdf
- https://static.usrfiles.com/ugd/b8c837_06c94ce8b47e43228f51319a208a66f1.pdf
- https://static.usrfiles.com/ugd/b8c837_ec75e064e67140e6a819ade02fb77d06.pdf
- https://static.usrfiles.com/ugd/b8c837_f453484c0fce4c15bf2363b5383b5521.pdf
- https://cdn.shopify.com/s/files/1/0438/1474/8322/files/pogebopobev.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87664315042.pdf
- https://cdn.shopify.com/s/files/1/0437/5927/2090/files/fanedif.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33971068516.pdf
- https://cdn.shopify.com/s/files/1/0441/2728/9496/files/nikewajupidawewuxokugeja.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000463b.bin` `bda4779ae15225be18270d4d4acdf68b9a238d676741e77ba12d90acf42391cc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x463B	5412 bytes
`font_01_sfnt_off00005889.bin` `e0e3fdcc8920738c50defb7c4ee783e54b9795d50732fa7f4d116ed807a6f3b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5889	11124 bytes

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