Malicious PDF — malware analysis report

Static analysis result for SHA-256 a68d6ba319cfaae6…

MALICIOUS

PDF

42.8 KB Created: 2020-08-23 02:37:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d19f062058c706fe12d032ca9015ccb SHA-1: c0e0ba7691c48572090b7b6bbf2082423aa6bd83 SHA-256: a68d6ba319cfaae6bda266409a627a7f884902a305614043d0adcae394ba1532
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to malicious infrastructure. The document body, though heavily obfuscated, contains a URL that aligns with this finding. The PDF also exhibits characteristics of a PDF_SEO_LINK_FARM, suggesting a large number of outbound links, with the primary malicious link being ttraff.ru.

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=simple+household+budget+template+free
    • http://files.oscarpalaciosarchitects.com/uploads/1/3/1/4/131406435/wevigofuz.pdf
    • http://files.carlinvillefire.com/uploads/1/3/1/1/131163752/a0e281ec7e01cd4.pdf
    • http://muxotawo.j-acevedo.com/uploads/1/3/0/8/130814070/nunam_misuledulozona.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7637/files/backtrack_5_r3_wifi_hacking_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0459/6206/8127/files/hankook_tires_review_consumer_reports.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/29562459582.pdf
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/zomuwefosufibowefebaxud.pdf
    • https://cdn.shopify.com/s/files/1/0437/2742/1608/files/1210844451.pdf
    • https://cdn.shopify.com/s/files/1/0434/4217/6150/files/auto_answering_machine_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0436/2836/3939/files/xubofakobogopazig.pdf
    • https://cdn.shopify.com/s/files/1/0435/9690/6659/files/adrian_paenza_libros.pdf
    • https://cdn.shopify.com/s/files/1/0450/8313/2056/files/how_to_darken_a.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_off00006817.bin
fdc149fa1c944febe8708d03987524d03ddad22e004f5793c095ae6ec00c6028		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6817 5696 bytes
font_01_sfnt_off00007b43.bin
2a563c98551491e0ec0e3f08eac650888f958cb7b3733fa3097bfc1e048b35df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B43 10336 bytes

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