PDF malware analysis — malicious · 3fca07a93c45e759

MALICIOUS

PDF

38.2 KB Created: 2020-09-01 08:24:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 89358d18a46f057b2eeb821f02e5dab4 SHA-1: d3322f5e75e14697d621b4e74dbfd51d2fbc31c4 SHA-256: 3fca07a93c45e75909e2878e621589834fcd6e00fa2b2a82c0739274ff20aabd

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=interpreting+motion+graphs+worksheet+answers'. This URL is likely used to redirect the user to a malicious site. The document body also contains this URL and numerous other PDF links, suggesting a link farm or SEO poisoning tactic. The primary attack pattern involves luring the user through a deceptive document title and a malicious link.

Heuristics 3

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.
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/pify?keyword=interpreting+motion+graphs+worksheet+answers
- https://static.usrfiles.com/ugd/b8c837_821b45cd8966440ba66dbcaf78623e81.pdf
- https://static.usrfiles.com/ugd/b8c837_0f94da350e97404c8c22214bdae5e1c3.pdf
- https://static.usrfiles.com/ugd/80bfa9_3c5a2fc72f3b45d193c47713c7957120.pdf
- https://static.usrfiles.com/ugd/b8c837_a6fa92e436784cf9956ea7197c1b1fa1.pdf
- https://static.usrfiles.com/ugd/47b1e8_820baa075182491abb245d76f08da3a6.pdf
- https://static.usrfiles.com/ugd/b8c837_ce05cf86db0144eb851017ae7d83654a.pdf
- https://static.usrfiles.com/ugd/f09a9d_be27b352696b417c8e584099e7d1015d.pdf
- https://static.usrfiles.com/ugd/82e28d_4052cc70e6c847b385e037dfabd8ae74.pdf
- https://static.usrfiles.com/ugd/7ff653_78475b5c14ea4a288cbfd8131babd35b.pdf
- https://static.usrfiles.com/ugd/b11f6d_cb8438f2b6f84235947356a3aea8e20b.pdf
- https://static.usrfiles.com/ugd/2c8d66_4779b85a59fb443e91968003d67108ff.pdf
- https://static.usrfiles.com/ugd/b8c837_0e81fd44c89242d781c1bddc7448a2a8.pdf
- https://static.usrfiles.com/ugd/12f4eb_e36b67f9951c4d14a1e35b98ed6eb0ea.pdf
- https://static.usrfiles.com/ugd/4b874d_c7eb654573174641b17e134f1ca3fb6d.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_off00005861.bin` `a37333e4d47762d2eaa0e247fd2880dfc62d78c80307940d1ae326026a9bf2e9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5861	5292 bytes
`font_01_sfnt_off00006a4b.bin` `f99a319929af5ee9948ccdffe5e40ce0c86e5b8f5c4ad90bc153ba33e48643f9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A4B	9740 bytes

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