Malicious PDF — malware analysis report

Static analysis result for SHA-256 9921a6d82ddd000c…

MALICIOUS

PDF

54.3 KB Created: 2020-08-14 06:42:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59c7f9e207f6a79da9be8e7693b6e771 SHA-1: b5665770bdadf3278392537b92928a47465c6f6d SHA-256: 9921a6d82ddd000c48d7ce1d1484fa3ca7f1569a4b608b9d38727d36c4f00d5e
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a large number of external links, a common tactic for SEO poisoning or redirecting users to malicious sites. One critical heuristic flagged a link to a known malicious redirector, ttraff.ru, which likely serves as an initial point of contact for further malicious activity. The document body itself contains garbled text and embedded URLs, reinforcing the nature of the attack.

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=basic+and+advanced+statistical+tests+pdf
    • http://pijuvasof.pkmotorsarc.co.uk/uploads/1/3/2/7/132712109/doneka.pdf
    • http://files.parishoflongpointbay.com/uploads/1/3/1/4/131483719/a041169fd85.pdf
    • http://lavasuziw.seanhasey.com/uploads/1/3/1/0/131070146/3751984.pdf
    • http://kosodat.roseembyrs.com/uploads/1/3/1/4/131412032/1cba2bdeecdae.pdf
    • https://cdn.shopify.com/s/files/1/0430/0367/4785/files/tourist_map_of_andaman_and_nicobar_islands.pdf
    • https://cdn.shopify.com/s/files/1/0436/1771/4334/files/bernie_sanders_medicare_for_all_plan.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/calligraphy_worksheets_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ganisififado.pdf
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/watome.pdf
    • https://cdn.shopify.com/s/files/1/0433/3387/7914/files/40499431378.pdf
    • https://cdn.shopify.com/s/files/1/0433/9413/8268/files/nivar.pdf
    • https://cdn.shopify.com/s/files/1/0432/9340/9438/files/37061154440.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8279/files/luvaxixakuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/2946/2177/files/arrival_of_the_birds_spartito_piano.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4882/files/46996504550.pdf
    • https://cdn.shopify.com/s/files/1/0435/2560/3488/files/catia_machining_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0430/0007/0307/files/panther_mastery_vanilla.pdf
    • https://cdn.shopify.com/s/files/1/0440/8895/0949/files/mawekireda.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/helicobacter_pylori_resistente_tratamiento.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_off000097dd.bin
c9282e69812ebf44678b4b066838f0baa49749822447393f737746228fb15d13
pdf-font-stream PDF embedded font (sfnt) at offset 0x97DD 5164 bytes
font_01_sfnt_off0000a97d.bin
47b5ff7dde4b0629f5d283e1bc3fcaee572df5d2c54ef5c194e531d1f6ace27f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA97D 10116 bytes