Malicious PDF — malware analysis report

Static analysis result for SHA-256 94d3aaacba033f41…

MALICIOUS

PDF

44.3 KB Created: 2020-08-11 13:59:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46894bacd3acae78fc5f462fa2a0e789 SHA-1: 4f7fbcb90617401d8c9fb6d447344c4aab4ac111 SHA-256: 94d3aaacba033f413bd1b130fba8d6eb13f78d6671da5a6e96083dce6f7250db
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF document contains a link farm and a specific malicious redirector URL, 'https://ttraff.ru/pify?keyword=internet+explorer+add+on+pdf+converter', designed to lure users into installing a browser extension or update. This social engineering tactic is a common method for delivering malware or harvesting credentials. The document's content and structure strongly suggest a phishing or malware delivery attempt.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=internet+explorer+add+on+pdf+converter
    • http://files.fogdogfarm.com/uploads/1/3/2/7/132740633/dufononofux.pdf
    • http://files.authenticnutritioncoach.com/uploads/1/3/0/8/130814172/5091151.pdf
    • http://poxajipel.alexlanshe.com/uploads/1/3/1/6/131606490/a25cfa2ababd6ad.pdf
    • https://cdn.shopify.com/s/files/1/0437/2303/0693/files/15780059149.pdf
    • https://cdn.shopify.com/s/files/1/0434/6911/1448/files/robotics_engineering_notes.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0946/files/pegafuzunetuvux.pdf
    • https://cdn.shopify.com/s/files/1/0431/5129/4619/files/52444764635.pdf
    • https://cdn.shopify.com/s/files/1/0438/1802/5122/files/error_9006_downloading_iphone_software.pdf
    • https://cdn.shopify.com/s/files/1/0430/0154/4863/files/63381931883.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/osrs_gilded_alter.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8165/files/77594027889.pdf
    • https://cdn.shopify.com/s/files/1/0430/5489/1161/files/college_algebra_stewart_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5577/files/alessandra_rampolla_libros.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_off00006e68.bin
d84689c5b1d5420972bd22d851f56b5830c5eae076a897e4fc188623698c2568		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E68 5036 bytes
font_01_sfnt_off00007f99.bin
c8db4f0dadbddab9020c82ce10af07ceba9c7ecd50cf9da8a8f6ed7dfb05e1de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F99 10784 bytes

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