PDF malware analysis — malicious · d7bbd97a7368c1e4

MALICIOUS

PDF

44.0 KB Created: 2020-08-31 05:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: d103e19541f3d09833218371ca5fae9f SHA-1: 41c2ce88f831ed3630418bbaec74445933340237 SHA-256: d7bbd97a7368c1e48b81c26cd5d07ec2075d5f2bc09898e8c971005a12b9377d

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure the user to a malicious site. The presence of numerous other links, many pointing to 'static.usrfiles.com', indicates a link farm, a common tactic for SEO poisoning or distributing 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=Haad+medical+technologist
- https://static.usrfiles.com/ugd/61f964_9328532b24254f839817192ac2771c76.pdf
- https://static.usrfiles.com/ugd/5bb01c_2c1dcafe638b42968c20a0e85c068a73.pdf
- https://static.usrfiles.com/ugd/173616_3436dae0668f4ace9ef14afd52e19475.pdf
- https://static.usrfiles.com/ugd/93c935_62016cad86374098b34420d471ac227b.pdf
- https://static.usrfiles.com/ugd/dc8a8e_3171108bd2524cb980b7c2cdad51d1b6.pdf
- https://static.usrfiles.com/ugd/6116da_7708e844c9e7476182ec486d965fe816.pdf
- https://cdn.shopify.com/s/files/1/0432/0493/5835/files/ecological_system_theory.pdf
- https://cdn.shopify.com/s/files/1/0429/9322/1783/files/76696023734.pdf
- https://cdn.shopify.com/s/files/1/0432/2299/1007/files/digilisaloxunoruwef.pdf
- https://cdn.shopify.com/s/files/1/0435/3074/8055/files/73882224304.pdf
- https://static.usrfiles.com/ugd/d5415a_7b6006d2b04948a0a173d8645680e3ea.pdf
- https://static.usrfiles.com/ugd/726ec9_a47d6c568eeb4a5ea8252546c19ed100.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_off00006688.bin` `842082587b53f5d332a85946f6ce7f0f07ec9268a58cac7602697e7e0eacd59c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6688	5220 bytes
`font_01_sfnt_off00007821.bin` `9bb70a3b230cbc91e0c6be54cf09abbd539a6cee545e1bedb33103ed10af01eb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7821	14192 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.