Malicious PDF — malware analysis report

Static analysis result for SHA-256 f91d2bc7c6440d08…

MALICIOUS

PDF

34.6 KB Created: 2020-08-19 05:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4779bec74f0e201ce94b462133b04219 SHA-1: 88b4470abb890d3b3ba9f065afc775c1a7f0a6e7 SHA-256: f91d2bc7c6440d086c0b55c73633c0e790edb1aebac6ede414a749bbcf988543
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body also contains this URL along with a list of other URLs, many hosted on 'cdn.shopify.com', suggesting a link farm or SEO poisoning attempt. The primary malicious link is likely intended to redirect users to a site that hosts malware or phishing content, disguised as a game download.

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/pify?keyword=blossom+blast+saga+apk+uptodown
    • http://files.maocorrea.com/uploads/1/3/1/4/131438823/6795867.pdf
    • http://files.advancedanaerobics.com/uploads/1/3/0/9/130969555/davam.pdf
    • http://vorufu.lizarudey.com/uploads/1/3/0/9/130969061/kinexemurazew.pdf
    • https://cdn.shopify.com/s/files/1/0428/7873/0403/files/off_the_leash_gucci_mane_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/6147/6504/files/jaxobevivodikekunugenutu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3886/7607/files/17610480771.pdf
    • https://cdn.shopify.com/s/files/1/0431/6381/2004/files/rugamito.pdf
    • https://cdn.shopify.com/s/files/1/0437/3577/7445/files/67909953711.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/92024855789.pdf
    • https://cdn.shopify.com/s/files/1/0437/8584/6933/files/zoxavesuluwanupulaluxosag.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/silekizezimepajetidomok.pdf
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/34800136596.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/47243532195.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_off0000498a.bin
d69e1588169175676945d45f928788e0883f28912d088248d5d65bc3db94fc54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x498A 5528 bytes
font_01_sfnt_off00005c52.bin
f4ee6fe9567f24d0831f843e794cc9da91570718f33cf64a0fbd903d4432a620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C52 9852 bytes

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