Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c118017eb73a362…

MALICIOUS

PDF

35.5 KB Created: 2020-08-31 13:10:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ae981712eda86bd274c3af1b035cf9b SHA-1: 464794b1cad8298a80261853c0bf9d4a2a7fe42e SHA-256: 8c118017eb73a3620a2de3b572e04e9741733284a20da00d3c550b0f20e37548
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, a common technique for SEO poisoning or redirecting users to malicious sites. One of the primary links points to 'ttraff.com', which is flagged as a known malicious redirector. The document body itself is heavily obfuscated and appears to be generated content, further supporting the idea that the links are the primary malicious component.

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.com/wix?keyword=basic+biomechanics+of+the+musculoske
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/jamududukapofuvijizel.pdf
    • https://cdn.shopify.com/s/files/1/0451/0813/4053/files/budget_2020_20_for_upsc.pdf
    • https://cdn.shopify.com/s/files/1/0428/8518/5702/files/bugipomotosotumem.pdf
    • https://cdn.shopify.com/s/files/1/0436/0306/7038/files/instrumentation_technician_job_description.pdf
    • https://static.usrfiles.com/ugd/b8c837_7642f6ffc28645288c5cd434533edc10.pdf
    • https://static.usrfiles.com/ugd/a2c2bc_012ea4def5574e7da84778c7518f725b.pdf
    • https://static.usrfiles.com/ugd/4b7290_a90a9214fa3e4c87ad49c1b24478bc7b.pdf
    • https://static.usrfiles.com/ugd/b8c837_a84918c81c784b88a640d33f38f09a31.pdf
    • https://static.usrfiles.com/ugd/b8c837_25ce794ea87541828f2e8ce8877a5f8f.pdf
    • https://static.usrfiles.com/ugd/f46427_9e237ade7edd4c5d87663c54cdd477f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad486d779b744cffbf4b9b74eba9bf46.pdf
    • https://static.usrfiles.com/ugd/b8c837_8417fa4b33b741ca9dab5101dfc5ddc9.pdf
    • https://static.usrfiles.com/ugd/b444d4_2dc9a0f1e452443598191be20ea63528.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.

FilenameKindSourceSize
font_00_sfnt_off00004d2e.bin
0d6429aa1392118eb800fa2610e47f8e140dc1617193343511c74ef07857caa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D2E 5276 bytes
font_01_sfnt_off00005f02.bin
84fe660f88cf52d1884c52cb1c9bd7f0997e6fad3520613e4fd017bc3dbb0730		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F02 10156 bytes

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