Malicious PDF — malware analysis report

Static analysis result for SHA-256 791535cd7eb30752…

MALICIOUS

PDF

43.5 KB Created: 2020-08-29 10:57:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdeffc8533e3ba4691359da1f9f4a663 SHA-1: 668b60d4b5821c1fc5089a6332fa2a5b42fd5094 SHA-256: 791535cd7eb30752cf6af48d9b84318410e69a7d6a430619b71e080e0fa51dff
150 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.cc', identified as a malicious redirector. Additionally, it hosts a large number of external PDF links, many pointing to Shopify, suggesting a link farm for SEO manipulation or to obscure the malicious destination. The document body, though partially corrupted, contains the same malicious URL and references a fable, indicating a social engineering lure.

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.cc/wix?keyword=fabula+el+leon+y+el+raton+resumen
    • https://cdn.shopify.com/s/files/1/0461/6650/7672/files/82984125620.pdf
    • https://cdn.shopify.com/s/files/1/0427/8606/2495/files/xesadovejoluxinatuxotir.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/payday_2_crack.pdf
    • https://cdn.shopify.com/s/files/1/0431/7705/0272/files/zogipisijetojukorewajavax.pdf
    • https://cdn.shopify.com/s/files/1/0436/1152/1187/files/maduzudafifukuzi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1283/2932/files/leonardo_da_vinci_anatomy_drawings.pdf
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/burowisi.pdf
    • https://static.usrfiles.com/ugd/b8c837_f15f4eec0df14e40a334b110ed713dea.pdf
    • https://static.usrfiles.com/ugd/b8c837_fe0446d557f643aeb0a71c025a0b4d7c.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_off00006a84.bin
fd372697eb5a0f6bcfe13435bf1f1f25e29903d5c963c0d8d07dbafe67c4e103		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A84 5028 bytes
font_01_sfnt_off00007b8c.bin
24f3a9daf6eecd2917894ba15067160c5cb9ab9ffc7ae6df44da511b47ef05b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8C 11296 bytes

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