Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e8763f86549b37f…

MALICIOUS

PDF

88.5 KB Created: 2020-08-02 05:21:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cf8939ce2646b901a763b4b8fe6f04f SHA-1: 98963a6997d4b356b81505ec29bd235c7879c416 SHA-256: 4e8763f86549b37fafd4631356639684ae7eb59f16406065251728c5803856e6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic generation. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body contains obfuscated text and a URL that matches the malicious redirector, reinforcing the malicious intent.

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=redtraffic+big+tits%2528+new%2521+cover
    • http://files.diversitee123.com/uploads/1/3/2/8/132814138/bapekijoba.pdf
    • http://files.franciscanministryofpeace.com/uploads/1/3/1/4/131483830/2789879.pdf
    • http://files.gaslogbbq.com/uploads/1/3/0/7/130775025/jowasifed-bixosenurujur-xebefobowogod.pdf
    • http://files.stpeterboosterclub.org/uploads/1/3/0/7/130739227/miloduvokin.pdf
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/wugej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.pdf
    • https://cdn.shopify.com/s/files/1/0435/5181/7883/files/masegiwutubolizuxozej.pdf
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/fikoped.pdf
    • https://cdn.shopify.com/s/files/1/0434/3804/7384/files/xisewuramatitarotawokigof.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/49919048654.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77636621448.pdf
    • https://cdn.shopify.com/s/files/1/0432/7879/4920/files/xapivarubabose.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/83092023004.pdf
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/ubqari_magazine_july_2020_pdf_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3649/2444/files/40442814506.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/
    • https://cdn.shopify.com/s/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d9e.bin
bbf0ba8053b04fa5f4d3fdbc6e76cd179c07d18adcb29e69e0b90013f8a928de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D9E 5584 bytes
font_01_sfnt_off000130e2.bin
00e55f399ff42a7b5c581099723a8fa6a9ffe43a67de5ceb3bc79e8741e4826b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130E2 10540 bytes

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