Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa86299c8482719a…

MALICIOUS

PDF

42.6 KB Created: 2020-09-02 05:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79d55ff7e3db3774a4808ce87c34d441 SHA-1: b3e196a9953e4dbbcd69178f0e0711b67198674c SHA-256: fa86299c8482719a224165810306b3ba5151dd35cbb86490ff09e6f4d774d18f
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it is a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=autodesk+inventor+assembly+tutorial+pdf'. The document body, though heavily obfuscated, also contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is likely used to redirect users to a phishing or malware download site.

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/wix?keyword=autodesk+inventor+assembly+tutorial+pdf
    • https://cdn.shopify.com/s/files/1/0435/8658/4733/files/96192643978.pdf
    • https://cdn.shopify.com/s/files/1/0429/2945/5271/files/rukmini_swayamvar_book_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/7487/9641/files/tilireriwite.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8133/files/xewejitu.pdf
    • https://static.usrfiles.com/ugd/5af86b_84b4cce0ceb34ef69666a34c8e749c84.pdf
    • https://static.usrfiles.com/ugd/856cea_09d2e48c7d394105a8c62a3434e4e4a0.pdf
    • https://static.usrfiles.com/ugd/2b98a3_a1290e22cf88453ca2ddc6b51dc3732b.pdf
    • https://static.usrfiles.com/ugd/19ce5d_1b7b2710fb9342c9a8438b8d1e55f812.pdf
    • https://static.usrfiles.com/ugd/b8c837_f53f307fa0df48128f1fe8f7a253689a.pdf
    • https://static.usrfiles.com/ugd/f65175_29f4c5f051c54bf7870c9bed3164a9f2.pdf
    • https://cdn.shopify.com/s/files/1/0434/6662/1094/files/ladoruvode.pdf
    • https://cdn.shopify.com/s/files/1/0438/1471/5549/files/ronejuludamejovalur.pdf
    • https://cdn.shopify.com/s/files/1/0429/9276/3039/files/fairy_tales_stories_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/6488/3355/files/ischemic_stroke.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b0a.bin
3f94d67f3a0f90d1bb90a94db976c2e62724b43cf196dc5855ce6ae7dc819b10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0A 5424 bytes
font_01_sfnt_off00006d66.bin
7c4877c1a15351a97d72b377ea044edf53c9283d3455413c4924471c31c7d55f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D66 9816 bytes
font_02_sfnt_off00008f01.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F01 4324 bytes

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