Malicious PDF — malware analysis report

Static analysis result for SHA-256 94455b8740a752a9…

MALICIOUS

PDF

45.5 KB Created: 2020-08-31 12:20:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bb36a758a779f6c20b98387483cbcd2 SHA-1: b6dcb26aa5c01a1a1a39d28a03415a57ece13328 SHA-256: 94455b8740a752a936b366925c720ffb2e8357db0445ad9409e5746028788b73
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL and references to a video game, suggesting a lure. The file also exhibits characteristics of a link farm, with numerous embedded links to Shopify-hosted PDFs, likely for SEO manipulation to increase visibility of 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=bible+black+video+game
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/lunitaledevubev.pdf
    • https://cdn.shopify.com/s/files/1/0432/0709/8529/files/tomupe.pdf
    • https://cdn.shopify.com/s/files/1/0434/1963/1765/files/79271238595.pdf
    • https://cdn.shopify.com/s/files/1/0435/5896/1320/files/understanding_business_william_nickels.pdf
    • https://cdn.shopify.com/s/files/1/0429/5963/4591/files/56009966624.pdf
    • https://cdn.shopify.com/s/files/1/0447/3788/8410/files/zojubupaxifig.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/73160648565.pdf
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/appendicitis_infiltrat.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/12085472946.pdf
    • https://cdn.shopify.com/s/files/1/0441/2496/2968/files/66978375594.pdf
    • https://cdn.shopify.com/s/files/1/0433/0523/8692/files/tetonutinimi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2245/files/forms_of_idolatry_that_threaten_christianity_today.pdf
    • https://cdn.shopify.com/s/files/1/0432/7532/1499/files/33622179611.pdf
    • https://cdn.shopify.com/s/files/1/0434/3375/4773/files/js_advanced_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0434/3136/2725/files/path_if_exile_fearless_cheat.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_off000073c6.bin
aa6082eb5d4d0f721d24056435341ec91bfcfe76088f41a5741c7db5033123fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73C6 5296 bytes
font_01_sfnt_off000085bc.bin
1f28f88e884de7d92375862801be8f391093ff7b160b7fcd606dce1bbbc55cc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85BC 10468 bytes

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