Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fe5bc73664e49c9…

MALICIOUS

PDF

35.5 KB Created: 2020-08-18 14:46:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d78bcba32c1735e18be272a7c14086e SHA-1: 345c832fd5dee864b39cfeaf5c8dd9f2bb8189a5 SHA-256: 1fe5bc73664e49c9e561a474ce89ec1e586c77baa5ad62c6645dcdc486de3e21
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to 'https://ttraff.cc/pify?keyword=advanced+medical+life+support+book+pdf'. This indicates an attempt to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify links, suggesting a link farm or SEO poisoning tactic to attract victims. The primary attack pattern is likely phishing or malware delivery via a malicious redirector.

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=advanced+medical+life+support+book+pdf
    • http://binog.kimprintzcustoms.com/uploads/1/3/0/8/130813330/lawup.pdf
    • http://files.breaxc.com/uploads/1/3/1/4/131409200/0a1cab0b227.pdf
    • http://files.centre5pinbowl.ca/uploads/1/3/1/4/131453198/4847870.pdf
    • http://files.parsippanyfriends.com/uploads/1/3/1/8/131856757/jijidip.pdf
    • http://leruluja.gnshs-pto.org/uploads/1/3/1/0/131070711/mosazekalutisegot.pdf
    • https://cdn.shopify.com/s/files/1/0433/0101/1614/files/85033454441.pdf
    • https://cdn.shopify.com/s/files/1/0437/5887/8872/files/wajonis.pdf
    • https://cdn.shopify.com/s/files/1/0432/5802/0004/files/calendar_2020_july_to_december.pdf
    • https://cdn.shopify.com/s/files/1/0443/8137/2582/files/2017_chevy_equinox_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/3446/8774/files/bekunedofotupor.pdf
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/kovukizujuwil.pdf
    • https://cdn.shopify.com/s/files/1/0430/2559/6573/files/rezezexapipex.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/zajijajiwokavug.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_off00004d60.bin
64b52ad3f4b78b3ac1f1d79e18f776bb530e1ffdee5e3f16d9588e35529da331		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D60 5556 bytes
font_01_sfnt_off00006029.bin
ca0b2d0ec22df5fe3078d9f683b108d62a9a28df54ca1b9409b190e1fba0d0e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6029 9776 bytes

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