Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad536cb51b26fa98…

MALICIOUS

PDF

42.4 KB Created: 2020-08-01 11:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 589f6f7274f394c2579255c93dad656f SHA-1: a01f1d22853e7390bedcfeccca62ae2513ce7e44 SHA-256: ad536cb51b26fa9893c7b98e0b88b544283b7b90aee05c664ce325353ac9b716
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=bloodborne+ritual+blood+4'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being to a Shopify domain. The document body, though heavily obfuscated, contains the same malicious URL and a reference to 'Bloodborne ritual blood 4', suggesting a lure to a malicious site.

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=bloodborne+ritual+blood+4
    • http://files.mainehunterjumper.com/uploads/1/3/1/3/131380052/dojagozaxe.pdf
    • http://files.centerstageboutiquetx.com/uploads/1/3/2/8/132815181/aec77eb.pdf
    • http://files.rvfreedommachine.com/uploads/1/3/0/7/130776826/8919676.pdf
    • http://files.cfdentalsupplies.com/uploads/1/3/0/7/130775363/vadutumisejelubi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3839/9902/files/62719090305.pdf
    • https://cdn.shopify.com/s/files/1/0434/9342/5316/files/fixijeweba.pdf
    • https://cdn.shopify.com/s/files/1/0428/8099/1388/files/poberunidapi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/werejuje.pdf
    • https://cdn.shopify.com/s/files/1/0432/3475/4728/files/dagelafulosanerifikade.pdf
    • https://cdn.shopify.com/s/files/1/0429/9915/2799/files/xobixetad.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/veguvapimadev.pdf
    • https://cdn.shopify.com/s/files/1/0432/3701/5719/files/28738384532.pdf
    • https://cdn.shopify.com/s/files/1/0438/3608/0285/files/pofibimojifudafol.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/8093209112.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_off00006a7e.bin
83b4f6b58cb83536568429167448c48eaf0b5537fa8e01cfcf31d0cdb7c589c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7E 4920 bytes
font_01_sfnt_off00007b44.bin
2114dc3dfff9f42384b7efc17a9822aca3ba7bbe644345b052623b6dc8ba14de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B44 9844 bytes

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