Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f5de260cff1bd0…

MALICIOUS

PDF

47.0 KB Created: 2020-08-01 16:21:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d1c8cd94e5c6e5d07a4e2074190a48d SHA-1: 8806fb3b7e01dee812487651f5aac78303a65e35 SHA-256: f7f5de260cff1bd02771c14b2a99b3084f735269f44df8b5f54f5a493409fa75
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, with a significant portion pointing to Shopify domains hosting other PDF files, and one primary link to a redirector. This structure is indicative of a link farm or a redirection scheme designed to obscure the ultimate malicious destination. The primary redirector URL, 'https://ttraff.cc/pify?keyword=%25D1%2580%25D1%2583%25D1%2581%25D1%2581%25D0%25BA%25D0%25B0%25D1%258F+%25D0%25B2%25D0%25B5%25D1%2581%25D0%25BD%25D0%25B0+%25D0%25BD%25D0%25BE%25D0%25B2%25D0%25BE%25D1%2581%25D1%2582%25D0%25B8', is flagged as malicious, strongly suggesting the document's purpose is to lead users to harmful content. No scripts were extracted from this sample.

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=%25D1%2580%25D1%2583%25D1%2581%25D1%2581%25D0%25BA%25D0%25B0%25D1%258F+%25D0%25B2%25D0%25B5%25D1%2581%25D0%25BD%25D0%25B0+%25D0%25BD%25D0%25BE%25D0%25B2%25D0%25BE%25D1%2581%25D1%2582%25D0%25B8
    • http://files.atonementdenver.org/uploads/1/3/1/3/131382330/54184682d4.pdf
    • http://files.theprairiecenter.com/uploads/1/3/1/6/131606046/2701042.pdf
    • http://files.agocharleston.org/uploads/1/3/0/7/130776266/xutux.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6651/files/kugazo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81256704061.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/jukuzinipa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/nozurapajesepa.pdf
    • https://cdn.shopify.com/s/files/1/0431/2127/9138/files/90763577251.pdf
    • https://cdn.shopify.com/s/files/1/0432/3147/7922/files/kolirox.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6729/files/51315306978.pdf
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/ed_miracle_reviews.pdf
    • https://cdn.shopify.com/s/files/1/0428/9868/6111/files/68698288199.pdf
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/milegibaludifojivezibap.pdf
    • https://cdn.shopify.com/s/files/1/0429/7519/9391/files/51346589664.pdf
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/53172792379.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_off00006d02.bin
63be698bae91ed96b1957536409c19890ee80c279788e9d1e031b142fddea959
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D02 5320 bytes
font_01_sfnt_off00007ebb.bin
f2633e3afc0f309461f438ce50c2224a2d790d2225f3fd759ded513761c35ae0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBB 14408 bytes