Malicious PDF — malware analysis report

Static analysis result for SHA-256 d477f49911e26e7a…

MALICIOUS

PDF

67.1 KB Created: 2020-08-20 18:29:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a3b4830d13731d3f29079b21efbbd3e SHA-1: b73d62d7f535cda86c58a2d8d7217a667e71a99c SHA-256: d477f49911e26e7af04bd36dcf921057d46abf2761ab716bf8a534e403aa3a45
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=decision+matrix+template+free'. This URL is presented within the document body, disguised as a link to a 'decision matrix template free'. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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/pify?keyword=decision+matrix+template+free
    • http://files.completebydesigncbd.net/uploads/1/3/1/4/131437680/dorofamexo-dikazum-bafevewozi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5912/5160/files/97312841581.pdf
    • https://cdn.shopify.com/s/files/1/0438/5082/5893/files/fundamentals_of_fluid_mechanics_munson.pdf
    • https://cdn.shopify.com/s/files/1/0432/0254/3778/files/good_riddance_green_day_piano.pdf
    • https://cdn.shopify.com/s/files/1/0437/7932/6103/files/19743969417.pdf
    • https://cdn.shopify.com/s/files/1/0434/6350/8121/files/bubizewesalifaten.pdf
    • https://cdn.shopify.com/s/files/1/0430/1688/0281/files/pronunciation_guide_applesauce.pdf
    • https://cdn.shopify.com/s/files/1/0431/8602/8708/files/terminal_command_line_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0439/1829/5195/files/verimaragoromotamimi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/vumupisawipurakusenasoj.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_off0000ca1f.bin
73874363eb30cd703f37dffa785263816f17e5236b1c70ca423725926fde73dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA1F 5228 bytes
font_01_sfnt_off0000dbcb.bin
896dd6b18a1e342295d8a828b53eec7afbf4174a75aabd620982736690fe735b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCB 10492 bytes

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