PDF malware analysis — malicious · 577466c762ab474c

MALICIOUS

PDF

50.9 KB Created: 2020-09-08 14:58:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8e59c5f91672ab49941d2471fed0e8bf SHA-1: 836918d892d95583fa3d19ecb947c548702f4571 SHA-256: 577466c762ab474c6c21687056560c7c78ea1cff115a00d6ada54f3b7b7446e7

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/pify?keyword=defense+of+the+ancients+game+free'. The document body, though heavily obfuscated, contains text related to 'Defense of the ancients game free', suggesting a lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to static.usrfiles.com, but one critical link to the redirector. No scripts were extracted, and the primary malicious behavior appears to be the redirection to a potentially harmful site.

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.me/pify?keyword=defense+of+the+ancients+game+free
- https://static.usrfiles.com/ugd/253000_7e6cb5edd9e0498c891734c5d20db2ea.pdf
- https://static.usrfiles.com/ugd/2813e2_fcc33dc25a4447c6a40aba65583952ef.pdf
- https://static.usrfiles.com/ugd/b58d21_df3e064ea4d046b78be0e3a37838ec94.pdf
- https://static.usrfiles.com/ugd/704566_99d0029623ba4b1cb91a74b58d0c0115.pdf
- https://static.usrfiles.com/ugd/ca9b0a_60984e54946a401ea05f35f14a888807.pdf
- https://static.usrfiles.com/ugd/abd6ea_28a9dac679c44c54acbef8dd5a919767.pdf
- https://static.usrfiles.com/ugd/268ab1_ecc4c83b8ea74740be941153eaf50046.pdf
- https://static.usrfiles.com/ugd/120f26_2deeba2225bb41dc8f9e1c4ee016a320.pdf
- https://cdn.shopify.com/s/files/1/0436/4913/8846/files/gifubuxadosi.pdf
- https://cdn.shopify.com/s/files/1/0431/7937/6798/files/gorofenovabivigu.pdf
- https://cdn.shopify.com/s/files/1/0430/0016/8597/files/76664052417.pdf
- https://cdn.shopify.com/s/files/1/0431/5552/1687/files/vidodutogikusipexefu.pdf
- https://cdn.shopify.com/s/files/1/0429/9833/3599/files/sumuzeleki.pdf
- https://static.usrfiles.com/ugd/1df9ea_f1e88c9d633d445c9d5a0c611a9b053c.pdf
- https://static.usrfiles.com/ugd/6f9b04_600213154a6d412e91ce1602b19f17d5.pdf
- https://static.usrfiles.com/ugd/cd81e9_12346b2e8ef24e51adfb947c420b7c3a.pdf
- https://static.usrfiles.com/ugd/9117e0_e8c730973cd84f129752bf7a0ad89ab7.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_off000088f2.bin` `e24091685947fd03cce973287be91661ae142701de33a24a1ddc0d8a9ae92a6d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88F2	5264 bytes
`font_01_sfnt_off00009aba.bin` `374096e1963601d593fe9e5a034d37167a3e13b347319e2443228a816d0a879f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9ABA	10420 bytes

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