Malicious PDF — malware analysis report

Static analysis result for SHA-256 d720e10b03e603b7…

MALICIOUS

PDF

34.5 KB Created: 2020-08-31 06:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a935e5e179f36f835ecce75087eb904 SHA-1: 31d7a1b41f468174ee79813d1c974581f24f00ce SHA-256: d720e10b03e603b7a047d811cfcbbba63ebaab5e716cf08acbe84b1b039532d4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is likely used to host further malicious content or phishing pages. The document body, though heavily obfuscated, contains the same redirector URL and references a YouTube episode title, suggesting a lure to attract clicks. The presence of numerous external PDF links, many pointing to static.usrfiles.com, indicates a link farm strategy, likely for SEO poisoning or to distribute the malicious redirector.

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=zabranjena+jabuka+1+epizoda+youtube
    • https://static.usrfiles.com/ugd/39cb9d_86e6d9d9a096414cb34e10c4a73cc72b.pdf
    • https://static.usrfiles.com/ugd/77941b_2d251bf7c68b44a083f1daa109a32b85.pdf
    • https://static.usrfiles.com/ugd/b8c837_e1b9eaafee024ac588beca8e65b2ae98.pdf
    • https://static.usrfiles.com/ugd/4bb894_bbaf8977c8234e5989cf6dda6c527401.pdf
    • https://static.usrfiles.com/ugd/374ce0_e35e6d2699d04c44952369b9942687bf.pdf
    • https://cdn.shopify.com/s/files/1/0436/5815/0046/files/pabomekurobuneduwin.pdf
    • https://cdn.shopify.com/s/files/1/0431/4578/9600/files/47828475640.pdf
    • https://static.usrfiles.com/ugd/837d34_2cc9ed04efda41dcad6cdbe1c3158c06.pdf
    • https://static.usrfiles.com/ugd/e3325f_16bd90e9326748f196bbbf8709e8a773.pdf
    • https://static.usrfiles.com/ugd/7c3584_162ee46e20494d29a2b4254d78eccd7a.pdf
    • https://static.usrfiles.com/ugd/47b1e8_127ef5e2051e463f8659e78db8524986.pdf
    • https://static.usrfiles.com/ugd/253000_f98f8f3fade8459f93dd9a1005e02f7d.pdf
    • https://static.usrfiles.com/ugd/b8c837_94ef65766b72413da4ffe1e51e63d629.pdf
    • https://static.usrfiles.com/ugd/f7fbc8_2928e192375b42bb87e9b32c42cc87ad.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000041b8.bin
7d5e27f7a1d3f6ac431f13c8ab8490ea5c109428084e4935687cfde28d4fdf08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x41B8 5064 bytes
font_01_sfnt_off0000530f.bin
c082e0890d46376c585249665f3f28ebe5316c3fb85f0363467e3be1b5e3ed89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x530F 8244 bytes
font_02_sfnt_off00006f3d.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3D 4324 bytes

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