PDF malware analysis — malicious · 3215491ee0a26a5c

MALICIOUS

PDF

53.7 KB Created: 2020-08-30 19:13:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7843fd46d4016668d7e77c10819f63c3 SHA-1: 496c3b471330afa54daf2ffb22f6da3304501408 SHA-256: 3215491ee0a26a5c8e428b549957a7451eafe04192db4cebe4f39264f45bc392

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=the+fighting+ground+lesson+plan'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to direct users to malicious infrastructure, likely for phishing or malware distribution.

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/wix?keyword=the+fighting+ground+lesson+plan
- https://static.usrfiles.com/ugd/63d3ad_b9ddccefa69b4ded966e795dd6376530.pdf
- https://static.usrfiles.com/ugd/bb13a2_d7ca4e9e5b8a438aa3acf1a16dd99ac0.pdf
- https://static.usrfiles.com/ugd/b8c837_2dfc249b14ab4e81a7130869703d6bdf.pdf
- https://static.usrfiles.com/ugd/b8c837_abb19d5022f14b53acc4175ae0f043c4.pdf
- https://static.usrfiles.com/ugd/ac72e0_35716e03e0e04122bd5f115f37c5f103.pdf
- https://static.usrfiles.com/ugd/b8c837_d7be3290c59e42d39fbaece658f1d0a6.pdf
- https://static.usrfiles.com/ugd/b8c837_8c73ad14b1d24763a6e587157199a5d8.pdf
- https://static.usrfiles.com/ugd/8b2c09_da8dbf56677b4eb1a9e5ae6b031f0ab6.pdf
- https://static.usrfiles.com/ugd/77d535_61b0ea36e2af4483b081c0cb7600b00e.pdf
- https://static.usrfiles.com/ugd/b8c837_506f562396bf4f09bcbc7d1bd30129cd.pdf
- https://static.usrfiles.com/ugd/b8c837_0019bec7fe5d4706b2cf7941c50487ad.pdf
- https://static.usrfiles.com/ugd/289c5e_eae7dac0b11d408c92475af95d66d678.pdf
- https://static.usrfiles.com/ugd/a6e5e9_aefa9e67de2c4c4cab498dac6f8c4b52.pdf
- https://static.usrfiles.com/ugd/b8c837_1008a45593a0482ba727a4884fcec52b.pdf
- https://static.usrfiles.com/ugd/83b1b3_a3e56f971a7b4aee9ab35470eb5169c4.pdf
- https://static.usrfiles.com/ugd/b8c837_8f4a2c07e0b840fabca3136754149fbb.pdf
- https://static.usrfiles.com/ugd/b8c837_b05a48b739514b51a755264b2be66eba.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/
- https://static.usrfiles.com/ugd/b8c837_506f562396bf4f09bcbc7d1bd3012

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00009334.bin` `9368c051e4c8f51c1efcbdf6358f7bc607c25685d389ee2a0e4983bb88f2e891`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9334	5252 bytes
`font_01_sfnt_off0000a50a.bin` `8290a235bed4eaf169e1d06977366375672598e89d6c2bd4d0ff48d944f59737`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA50A	11096 bytes

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