Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9f25c688c33d1d5…

MALICIOUS

PDF

36.7 KB Created: 2020-08-03 08:16:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a254a21b86aaf03a60ea07c81268061 SHA-1: e3169272badd1cffd277cc8e6af7807c31ef3804 SHA-256: f9f25c688c33d1d5ebb83dd96cafd5149731bb28bcf0fbee39cad5c0f64471b2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a service manual. This indicates a phishing or social engineering attempt to redirect the user to malicious content. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely for SEO manipulation or to obscure the malicious redirector.

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.com/pify?keyword=drz400+service+manual+pdf
    • http://files.chililibrary.org/uploads/1/3/2/6/132682076/5cfc8669.pdf
    • http://files.insidedmc.org/uploads/1/3/0/7/130775859/2829922.pdf
    • http://files.aksushiya.com/uploads/1/3/0/8/130873987/voxewivav_jisotisogokusix.pdf
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/34171056048.pdf
    • https://cdn.shopify.com/s/files/1/0440/8901/6472/files/14818319353.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7238/files/discord_emoji_bot.pdf
    • https://cdn.shopify.com/s/files/1/0432/3537/7307/files/pamineb.pdf
    • https://cdn.shopify.com/s/files/1/0432/8279/2606/files/76003950043.pdf
    • https://cdn.shopify.com/s/files/1/0434/4306/0901/files/dinobadipivixenasatasavaf.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/68197840224.pdf
    • https://cdn.shopify.com/s/files/1/0432/0706/5757/files/kelozaxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/86526592296.pdf
    • https://cdn.shopify.com/s/files/1/0439/0774/3899/files/buruv.pdf
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/kelisoxus.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_off00004f42.bin
6529506d1ab767a9de62d4b82fddef77ce7b718c96d2bcca2c07467b2e0b016d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F42 5640 bytes
font_01_sfnt_off00006278.bin
e1dcdadd4ca9b43803b3500b9df7e7163fff45cf5eb4dbd92028ed0a4ac5587d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6278 10344 bytes

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