Malicious PDF — malware analysis report

Static analysis result for SHA-256 c68cc4f617b2a99e…

MALICIOUS

PDF

36.0 KB Created: 2020-09-02 08:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff686168e98363f064af0d444ac0c756 SHA-1: a8d0e6f613e0ee5fee55d16ef71b51ce9cd02fc0 SHA-256: c68cc4f617b2a99e05e1648eed623ee7736304c4252a79ed22d338232771b668
120 Risk Score

Malware Insights

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

The PDF was identified as malicious due to its inclusion of a large number of external links, a technique often used for SEO manipulation or to host malicious content. One of the embedded URLs, 'https://ttraff.me/pify?keyword=badass+babua+video', is flagged as a known malicious redirector. The document body contains text related to 'Badass babua video' and the authoring application 'wkhtmltopdf', suggesting a lure or content generation method.

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.me/pify?keyword=badass+babua+video
    • https://cdn.shopify.com/s/files/1/0463/8877/3019/files/akshara_singh_ke_bhakti_gana_video_ing.pdf
    • https://cdn.shopify.com/s/files/1/0437/3128/8218/files/pinavaforoduxegijowuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/65138130590.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/lukudare.pdf
    • https://cdn.shopify.com/s/files/1/0432/5870/8136/files/rudapegejobagizurexok.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf551a7e46aa44c3a958e961fa977820.pdf
    • https://cdn.shopify.com/s/files/1/0430/8851/1130/files/bojafiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7255/files/nexus_5_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/caller_id_fake_app.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/tusakeduxamepim.pdf
    • https://cdn.shopify.com/s/files/1/0432/1155/4980/files/98305478620.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_off00004815.bin
1379b8290ceb8cbc06192a3006e1db6d5ca859b5d0cea6f210ce71802e1c51b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4815 4940 bytes
font_01_sfnt_off000058f9.bin
8ff335c31b721bc554e5e620a733cd3b2600e290918cbab167782ca1765270bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58F9 13976 bytes

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