Malicious PDF — malware analysis report

Static analysis result for SHA-256 f72a21ac6df66202…

MALICIOUS

PDF

48.6 KB Created: 2020-08-24 19:40:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dcd4f91902cfdda658f96876a4a2e07 SHA-1: 9adca8b89591f5e9e184fd1e1da61a66334d97a7 SHA-256: f72a21ac6df662025f858894b2daebba6d6e26ada94aefc1c76e5971497cf127
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=meramec+springs+fishing+report', suggesting a lure to a phishing or malicious site. Another heuristic indicates a PDF link farm, with the primary domain being cdn.shopify.com, which hosts numerous PDFs.

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=meramec+springs+fishing+report
    • http://jodizux.johnkilkennypercussion.com/uploads/1/3/0/8/130813612/lodizon-kevasogube-jadewifis-retinebidije.pdf
    • https://cdn.shopify.com/s/files/1/0431/9218/9089/files/desasoxigegikopir.pdf
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/83242085400.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/32931576475.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6667/files/jacquees_me_patron_and_you.pdf
    • https://cdn.shopify.com/s/files/1/0435/9222/0829/files/fugorotusufowagupala.pdf
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/mowinorexudewi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5144/9504/files/57634671819.pdf
    • https://cdn.shopify.com/s/files/1/0433/9305/6933/files/74583348692.pdf
    • https://cdn.shopify.com/s/files/1/0429/5956/9055/files/xidajijobumopigexipuvew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87743453122.pdf
    • https://cdn.shopify.com/s/files/1/0435/8206/2753/files/adsorption_capacity_of_activated_carbon.pdf
    • https://cdn.shopify.com/s/files/1/0443/6430/0444/files/adverbs_of_frequency_esl.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_off00007eed.bin
152c5d8f982b7e75d8ba4b7766629325f73e2f2bd933fcbd06904ca0e223b352		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EED 5400 bytes
font_01_sfnt_off00009129.bin
ee0f9aa306fb725914826fd3e8788963986b96ee46b399bf13495667d7137633		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9129 10576 bytes

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