Malicious PDF — malware analysis report

Static analysis result for SHA-256 510ed91edb8730f7…

MALICIOUS

PDF

41.3 KB Created: 2020-08-25 08:43:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ed7a8cf7bfb0d706055ad98fe0c1a6c SHA-1: aff2f8344777e33727911c613e26076f73fef714 SHA-256: 510ed91edb8730f7993eb7dbed2359ec60587b994870b041359b979a8fe68ac1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link farm, with multiple embedded URLs pointing to external resources. One of these URLs, 'https://ttraff.ru/pify?keyword=cartoon+football+games+free', is identified as a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'cartoon football games free', suggesting a lure to attract users. The presence of numerous Shopify-hosted PDF links, while some are benign, contributes to the overall SEO link farm tactic.

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/pify?keyword=cartoon+football+games+free
    • http://files.mrloader.com/uploads/1/3/1/3/131380985/guxonesipigoxa_rupepepirefaz_luduzazudojo.pdf
    • http://files.tudorinteriorblinds.com/uploads/1/3/1/4/131406827/5e7c4791.pdf
    • http://files.shahlaali.com/uploads/1/3/0/7/130775897/gexodufumezulobax.pdf
    • http://files.christophercanniff.com/uploads/1/3/1/4/131453267/cb953cf.pdf
    • https://cdn.shopify.com/s/files/1/0439/3782/4926/files/abnormal_uterine_bleeding_powerpoint_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/82006774716.pdf
    • https://cdn.shopify.com/s/files/1/0439/3821/8152/files/22257417917.pdf
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/tsing_ma_bridge_viewing_platform.pdf
    • https://cdn.shopify.com/s/files/1/0437/4773/7754/files/c._o._full_form_in_police.pdf
    • https://cdn.shopify.com/s/files/1/0437/1726/3510/files/arabesque_no_1_debussy.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8167/files/33461158996.pdf
    • https://cdn.shopify.com/s/files/1/0436/7079/8489/files/converting_metric_measurements_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0438/3296/7318/files/31413050366.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_off000064ea.bin
d7a0060dd90a94a40d68e12e81cae3ee6d0e6daaad179e8338ed355c5bcf60a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64EA 5132 bytes
font_01_sfnt_off0000764a.bin
edd4f7f1db8dc898971b870b348065eb05f7d84de4aa6ee54cf3615a5a134bf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x764A 10060 bytes

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