Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6d933fb3008e6bd…

MALICIOUS

PDF

59.7 KB Created: 2020-07-31 05:40:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 416035a52f0fe055cb370e7d26ae9bd7 SHA-1: fa929f20ecf4af691af37684f91bea34997fde66 SHA-256: f6d933fb3008e6bdf0b30d208b3c28ff195432c3ff439a39ffa8777c5674aab9
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=analiticka+hemija+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, with a significant portion hosted on cdn.shopify.com. The document body is heavily obfuscated and unreadable, providing no further context on the intended lure.

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=analiticka+hemija+pdf
    • http://files.taniasarthouse.com/uploads/1/3/0/7/130775221/rupuxitoki-fizazuv.pdf
    • http://files.lindoncitydrill.com/uploads/1/3/1/4/131438571/sozison.pdf
    • http://files.teauekubo.org/uploads/1/3/1/1/131164475/lanut.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0805/files/39719071019.pdf
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/28613730837.pdf
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/40218902387.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/mifub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/73121007565.pdf
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/jojorawo.pdf
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/64030489832.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7624/files/84772898382.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1644/files/97690161878.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_off0000ab10.bin
ad2222a778a8bb8e5335eb018fc530227cda3203ae68d42ce5d8cbb85b2ea76f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB10 4928 bytes
font_01_sfnt_off0000bba5.bin
64b5ab7b4589f58e6d5631083a9e5d8b269caf28c13bc46637013b746173ce3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBA5 11620 bytes

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