Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e70fbcaccf44d37…

MALICIOUS

PDF

63.7 KB Created: 2020-08-30 03:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43fc1779a4655774aea5b673c20988be SHA-1: 821b571fca1bf7bd89cc11e149c7cd6490736cd0 SHA-256: 2e70fbcaccf44d37a49afbe25c32ca206dc69b4b77498528b89b597242e67ab0
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=pharmaceutical+practice+pdf'. This URL is embedded within the document's body, suggesting a phishing or scam attempt to redirect the user to malicious infrastructure. The file also exhibits characteristics of a link farm, with numerous external PDF links, further supporting a malicious intent.

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=pharmaceutical+practice+pdf
    • https://static.usrfiles.com/ugd/39cb9d_6a2b9392c91e4da788ec9d54f5cf9cba.pdf
    • https://static.usrfiles.com/ugd/e42ee3_813903a6c9bf4723ba1b62734c6a8856.pdf
    • https://static.usrfiles.com/ugd/b8c837_ec8fa0036ef7465ea804f506bcd2eca4.pdf
    • https://static.usrfiles.com/ugd/b8c837_393e1c2745cd476e9e03f675baba9934.pdf
    • https://cdn.shopify.com/s/files/1/0435/5427/5479/files/mathematical_physics_by_hk_dass_free.pdf
    • https://cdn.shopify.com/s/files/1/0449/8613/8792/files/programa_arquitectonico_estadios.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/67408285059.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2459/files/koboka.pdf
    • https://cdn.shopify.com/s/files/1/0437/5478/2869/files/avg_for_windows_xp_sp3.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9590/files/65285070372.pdf
    • https://cdn.shopify.com/s/files/1/0438/5059/6512/files/taxisi.pdf
    • https://static.usrfiles.com/ugd/b8c837_0dd76032c2fb4879846c6c50cf3f39df.pdf
    • https://static.usrfiles.com/ugd/b8c837_00fea06aa38c4ce8bc87f5a3bba3301c.pdf
    • https://static.usrfiles.com/ugd/73c254_b69ab21490884bb591a6558cfe68c5b6.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_off00009710.bin
e0d73f3bbe1f9d31c63dcc7deab55a373c840042181cdcd0f13531a0f5589d66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9710 7760 bytes
font_01_sfnt_off0000b119.bin
26bcf3962fa0302b76c3e21d51a72ce8dce5c8fc2785c6e090857e353a289bf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB119 5216 bytes
font_02_sfnt_off0000c2b0.bin
2a114feffcb7f1de4e4393b23b5dc54c838cf6c9a64454d863d01ac56cd8a8d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2B0 14252 bytes

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