Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9bf179f093e28fa…

MALICIOUS

PDF

39.1 KB Created: 2020-08-04 17:36:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8a4d47eb6f58f8cc63a3d82344b3323 SHA-1: e30fe2d57b76ce70165f1ab7c5b6fcc5a9e981e2 SHA-256: d9bf179f093e28fad4bbf6ae8d4ef3532c51af30fedd75c84e794b70312baa45
128 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a download for a workbook. This link points to ttraff.com, which is known malicious infrastructure. The document also contains a large number of links to other PDFs hosted on Shopify, likely for SEO manipulation to increase visibility. The presence of a visual download button further supports the lure.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=exin+agile+scrum+foundation+workbook+pdf
    • http://files.birchsage.com/uploads/1/3/1/4/131454316/6080822.pdf
    • http://files.morjimcocopalms.com/uploads/1/3/1/3/131384789/2a0aea98a146c0c.pdf
    • http://files.cobblandmarks.com/uploads/1/3/1/1/131163669/pifaxowa.pdf
    • https://cdn.shopify.com/s/files/1/0429/1274/3580/files/39856706726.pdf
    • https://cdn.shopify.com/s/files/1/0435/9867/6131/files/66512043006.pdf
    • https://cdn.shopify.com/s/files/1/0434/1648/6040/files/types_of_bar_glasses_with_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0437/5193/2056/files/frugal_hedonism.pdf
    • https://cdn.shopify.com/s/files/1/0435/8501/1869/files/68303399266.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/86138761885.pdf
    • https://cdn.shopify.com/s/files/1/0437/9194/1781/files/dragon_scales_dark_souls.pdf
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/betemefamixiku.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bugos.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/gobidafawum.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71340125447.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4530/files/62901879597.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5842/files/64810360106.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_off0000584c.bin
fa2ccb0c84fa659e8f104593d201c5284629d3ab15f95ffde4e2c1c073b3f041		 pdf-font-stream PDF embedded font (sfnt) at offset 0x584C 5796 bytes
font_01_sfnt_off00006c13.bin
7925a2e99dbcfc04027e7f52a353f58246fb60685fa964b16b520311e7685e59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C13 10376 bytes

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