Malicious PDF — malware analysis report

Static analysis result for SHA-256 264ec8d1925a86a0…

MALICIOUS

PDF

44.3 KB Created: 2020-08-22 00:23:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7968557f693e500f2a72ce1f54ad1f46 SHA-1: 3cbd85e720231b01cb4e53d68320ffa1d6240c70 SHA-256: 264ec8d1925a86a062f7392fe9266ae47d98d43eede33416384aedb032194596
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a game download. This URL, 'https://ttraff.com/pify?keyword=game+billiard+8+pool+offline+pc', is the primary indicator of malicious intent. The file also exhibits PDF_SEO_LINK_FARM behavior, embedding numerous links, many of which point to benign Shopify domains, likely as a camouflage or to inflate SEO metrics.

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=game+billiard+8+pool+offline+pc
    • http://files.mysanelife.com/uploads/1/3/1/4/131482931/8f4449fb.pdf
    • http://gobowe.iowafallslib.com/uploads/1/3/1/3/131378776/6492380.pdf
    • https://cdn.shopify.com/s/files/1/0439/3841/4760/files/routing_protocols.pdf
    • https://cdn.shopify.com/s/files/1/0432/1653/5720/files/38065664451.pdf
    • https://cdn.shopify.com/s/files/1/0436/2554/5890/files/ninunotokidupavibeno.pdf
    • https://cdn.shopify.com/s/files/1/0431/6990/6844/files/20307001560.pdf
    • https://cdn.shopify.com/s/files/1/0437/6212/2903/files/jedolosiwokufojona.pdf
    • https://cdn.shopify.com/s/files/1/0462/3489/4496/files/pdf_worksheet_on_pronouns.pdf
    • https://cdn.shopify.com/s/files/1/0441/3535/0424/files/jaferufefemazozageda.pdf
    • https://cdn.shopify.com/s/files/1/0436/8806/7225/files/viwemupulotajopa.pdf
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/janajewe.pdf
    • https://cdn.shopify.com/s/files/1/0436/7987/5225/files/axis_mutual_fund_kim_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/0238/6856/files/12368375528.pdf
    • https://cdn.shopify.com/s/files/1/0432/5149/9170/files/toniripunumugorobuwodi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4977/0408/files/98364567563.pdf
    • https://cdn.shopify.com/s/files/1/0431/0273/2448/files/measurement_and_instrumentation_lecture_notes_for_eee.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_off00006e25.bin
efe6eea104f54fefc03eb0733ab5d272c2f6f9ca92b04718049cd3cee7d35fde
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E25 5488 bytes
font_01_sfnt_off000080b8.bin
8b6d873770427872af652c4a694216b918614001ac5cdfac851d1eeda88b74cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x80B8 10408 bytes