Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe658f5b179b9720…

MALICIOUS

PDF

35.9 KB Created: 2020-08-03 12:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 826710d8a077cb1973daccf7b317efe3 SHA-1: 634dafebab603b0031753f5830556bf664c2b679 SHA-256: fe658f5b179b9720cf23960c45226b50ee40bf8daaeba4287e82df5bdf325481
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.ru, disguised with a keyword related to song chords. It also exhibits characteristics of a PDF link farm, with numerous embedded links pointing to various external PDFs, many hosted on Shopify. The primary intent appears to be luring users to malicious infrastructure through deceptive links within the document.

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=ajarku+berdiam+chord+pdf
    • http://files.nswspruikle.com/uploads/1/3/1/4/131453592/xopogogatu_duxodazakizal.pdf
    • http://files.londonambulanceservice-patientsforum.org/uploads/1/3/1/4/131454270/5d8a2e87f1.pdf
    • http://files.kinneylmft.com/uploads/1/3/1/3/131398504/delutemasopikenedojo.pdf
    • http://gerilis.travelbyrobins.com/uploads/1/3/2/8/132815002/558fe4.pdf
    • http://files.insomnilacq.com/uploads/1/3/1/4/131454316/ce438c4ecec406c.pdf
    • https://cdn.shopify.com/s/files/1/0435/1783/7467/files/sibisufabelesuxafi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/star_wars_force_and_destiny_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/48423982014.pdf
    • https://cdn.shopify.com/s/files/1/0431/4077/6093/files/muwosuwuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/4818/9603/files/3297983035.pdf
    • https://cdn.shopify.com/s/files/1/0431/6381/2002/files/29358630515.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8539/files/54125927048.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/kagufuledepisal.pdf
    • https://cdn.shopify.com/s/files/1/0435/4015/2479/files/jipumatitinumaxadibaxo.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_off00004e1b.bin
9a9fc70c9de909822578bf825476a48f43d8fdc8fc0245c71dab65770cd66f73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E1B 5452 bytes
font_01_sfnt_off00006085.bin
c4be484a6b639a64fc2a18d73e4171bb0ac8885d845309f0e7df2d5c65e43366		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6085 10028 bytes

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