Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a6fd820cebf0cb3…

MALICIOUS

PDF

44.2 KB Created: 2020-08-23 03:50:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2372523979df61546bc734641cbbe508 SHA-1: b2873676737edc9dfd4fdd6416cb45fde9946cf5 SHA-256: 4a6fd820cebf0cb370aca9cff408c72bacc3ec18ec958bce59b857e614d96336
130 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and a call-to-action phrase, suggesting a lure to a malicious site.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=universal+audio+apollo+8p+manual
    • http://files.tylershipmanmemorialcarshow.com/uploads/1/3/1/3/131398231/tenakib.pdf
    • http://files.lonniefeather.com/uploads/1/3/1/3/131382243/8334960.pdf
    • https://cdn.shopify.com/s/files/1/0438/9529/2059/files/bits_and_bytes_ace_academy.pdf
    • https://cdn.shopify.com/s/files/1/0439/8107/8686/files/85859150566.pdf
    • https://cdn.shopify.com/s/files/1/0438/2221/9421/files/92482294656.pdf
    • https://cdn.shopify.com/s/files/1/0429/4819/8556/files/80057643515.pdf
    • https://cdn.shopify.com/s/files/1/0431/6764/5857/files/96680343823.pdf
    • https://cdn.shopify.com/s/files/1/0432/2240/1192/files/xisolubetelujiwaro.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/12954078414.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/82021122441.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/zudigiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/9086/9410/files/1360656335.pdf
    • https://cdn.shopify.com/s/files/1/0432/4546/9858/files/nirugivigavitusobazudime.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_off00006df2.bin
91da7d8d1734c6548b54ba05621028d57a94a1e2b3513a0ea95643bc2561fffa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF2 5348 bytes
font_01_sfnt_off0000800d.bin
95f0dc3de741621ae68d6cf84dc9b889e99fcc661221abf75e4fd70efa616fda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x800D 10568 bytes

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