Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa22bdd3780bb1a…

MALICIOUS

PDF

44.2 KB Created: 2020-08-29 19:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e4165f8fea5f32e2b08aa6980b0d898 SHA-1: ea45b1092c069ce8af5772e745ec56efcc1d064c SHA-256: eaa22bdd3780bb1aac32fe6b5bb9d2c45d272b152a2f7a2909b66a26dff1eb12
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, a technique often used for SEO spam or to direct users to malicious websites. One of the extracted URLs, 'https://ttraff.cc/wix?keyword=tekken+7+character+tiers', is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on 'static.usrfiles.com', suggesting a link farm designed to attract traffic or distribute malware. No scripts were extracted from this sample.

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.cc/wix?keyword=tekken+7+character+tiers
    • https://static.usrfiles.com/ugd/b8c837_d5604d5f2d7741efba6f247756932ddc.pdf
    • https://static.usrfiles.com/ugd/eb4c03_137657779fb347409344f3ede1bc2ecb.pdf
    • https://static.usrfiles.com/ugd/b8c837_423da957b24945749e3364e832b5d02a.pdf
    • https://static.usrfiles.com/ugd/b8c837_d959ab4ea29e44358bc3c9c5325339e3.pdf
    • https://static.usrfiles.com/ugd/b8c837_b16d581f22fa4d2f8dd74bcbb1475238.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc867e3c0f824837a0a84fdce9969f33.pdf
    • https://static.usrfiles.com/ugd/bf650e_98832bf8a5ca448ebb406dace0c363f8.pdf
    • https://static.usrfiles.com/ugd/e3c460_8bf6b212580b497ca1d64ced52a3b626.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5e79728260346d08b9ac18b906ce447.pdf
    • https://static.usrfiles.com/ugd/b8c837_8aa41ffa18ba4e1197b953e9ff1370bf.pdf
    • https://static.usrfiles.com/ugd/b8c837_032545bc579f4844a2adcab88841ae67.pdf
    • https://static.usrfiles.com/ugd/b8c837_033bed34c16348498c0422b5935de5ce.pdf
    • https://static.usrfiles.com/ugd/10e3af_f6e62e52029c463daa57f50b4c676121.pdf
    • https://cdn.shopify.com/s/files/1/0432/0873/6936/files/nozoguzoduwituxado.pdf
    • https://cdn.shopify.com/s/files/1/0435/7970/3451/files/voxamuzavurozavuwakibovak.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/68235178152.pdf
    • https://cdn.shopify.com/s/files/1/0430/0043/0746/files/sotivigonoxerepoxemewido.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_off00006346.bin
cca40f6a131ae422e8b1566ec8724914e60fb1e111004a5704a3968093e1724d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6346 4628 bytes
font_01_sfnt_off000072ea.bin
936e962518c340473eadf1b7cc69fed603ac4f67e658204fca0ad445d3c589aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x72EA 10272 bytes
font_02_sfnt_off000095de.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x95DE 4324 bytes