Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3936136ee1dca50…

MALICIOUS

PDF

38.6 KB Created: 2020-08-18 14:41:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87a1a02fdb3c8d4b08c71df0265164a0 SHA-1: ca9178c8052aad4f4875afb1007de75f042bf710 SHA-256: e3936136ee1dca502c931f89d845c1bdfd8a8994549c068861df3220125a6e8f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=a1275+datasheet+pdf'. It also exhibits characteristics of a PDF link farm, with numerous links to Shopify domains, though one of these is identified as a potential lure. The document body contains garbled text but includes the target URL, suggesting an attempt to disguise malicious content as a datasheet. No scripts were extracted, but the presence of a malicious redirector indicates a likely phishing or credential harvesting attempt.

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=a1275+datasheet+pdf
    • http://files.alphatrucksolutions.com/uploads/1/3/1/8/131856907/burowigapaferedum.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7006/files/free_p2p_blocklist.pdf
    • https://cdn.shopify.com/s/files/1/0437/6756/2391/files/22819701590.pdf
    • https://cdn.shopify.com/s/files/1/0436/4576/3744/files/45695268167.pdf
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/vekiforuvog.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5302/files/47693820115.pdf
    • https://cdn.shopify.com/s/files/1/0431/8789/6488/files/factoring_polynomials_steps.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/62410824685.pdf
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/8742470237.pdf
    • https://cdn.shopify.com/s/files/1/0433/6658/0382/files/30258425439.pdf
    • https://cdn.shopify.com/s/files/1/0429/6101/0842/files/wupujosikived.pdf
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/rusatafagolidaliteb.pdf
    • https://cdn.shopify.com/s/files/1/0432/0192/1184/files/50365846683.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_off00004f6e.bin
b8f6de1b4af267f675489f963f63b97b79592e00eea5ee17cca1db7a7958fa00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F6E 5380 bytes
font_01_sfnt_off000061c3.bin
50cc2ee9ee43d40b827629efca0e7b31ce26094a9956c14d4ef536c905ce8464		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C3 14508 bytes

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