Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8cb0af8325eee44…

MALICIOUS

PDF

36.6 KB Created: 2020-08-02 09:49:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 990e94b4d690ded080a22950e5caf7cd SHA-1: ed51d8f3bd634034befe326fa137c8b27aeac06b SHA-256: d8cb0af8325eee448349dc6a71ff271a1213220cb92a5378e092c739180e7c18
150 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 'https://ttraff.ru/pify?keyword=clicker+heroes+unblocked'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains references to 'Clicker heroes unblocked' and the malicious URL, suggesting a lure to a potentially malicious site. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=clicker+heroes+unblocked
    • http://files.shalomhealthsolutions.com/uploads/1/3/1/1/131164239/2b5a96c.pdf
    • http://files.youtrition.co.uk/uploads/1/3/2/6/132683121/zodilog_lulosejifeno.pdf
    • http://files.cricstudios.com/uploads/1/3/1/8/131856146/sunoga_witojimos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/84239478197.pdf
    • https://cdn.shopify.com/s/files/1/0435/5126/0836/files/unix_tail_commands.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kenawuvotijogajutimev.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0220/files/95749499049.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/81666959406.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/32375096028.pdf
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/36093332828.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ralaguguzovepusumizus.pdf
    • https://cdn.shopify.com/s/files/1/0432/3812/9823/files/zimidebopu.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_off0000521a.bin
b73919f4f0831e5d6b6bbb0e6568dd8c779e971e91e56288dcabb104f178eccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x521A 4924 bytes
font_01_sfnt_off000062d1.bin
797db85e42d1725b04f95e8ea92eb404f432b1d8d0b7c42424cd914460c8aa2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62D1 10172 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.