Malicious PDF — malware analysis report

Static analysis result for SHA-256 abff2b7b44ab874d…

MALICIOUS

PDF

36.8 KB Created: 2020-08-31 07:06:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63953ac6f96138b0135268e84091feb6 SHA-1: ed5f6cf1bbefb0e7581ef607a35faae65ef2ec4f SHA-256: abff2b7b44ab874dc5c3a5ff52023871c302a9921aae70dce08a2273ac872690
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to external content. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm or SEO poisoning tactic to distribute malicious content.

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/wix?keyword=watch+austin+powers+goldmember+online+free
    • https://cdn.shopify.com/s/files/1/0431/9445/0078/files/28887324342.pdf
    • https://cdn.shopify.com/s/files/1/0436/7237/1350/files/sonuraxebumivemegibi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/the_chainsmokers_closer_lyrics_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0447/2678/0060/files/android_google_sign_in_button_style.pdf
    • https://cdn.shopify.com/s/files/1/0430/5757/8138/files/anisocoria_trauma.pdf
    • https://static.usrfiles.com/ugd/ba3095_bac561331aea4a3581846e50b4ff1dca.pdf
    • https://static.usrfiles.com/ugd/b8c837_9d11b6247966490d9a33fece389ace91.pdf
    • https://static.usrfiles.com/ugd/71fd01_1cca6fab334b448b8753ed253e64eab0.pdf
    • https://static.usrfiles.com/ugd/fd30ac_1637886a2da34039a393e13ad98fd6e0.pdf
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/87618020237.pdf
    • https://cdn.shopify.com/s/files/1/0436/2931/4206/files/94476522094.pdf
    • https://cdn.shopify.com/s/files/1/0429/2775/1321/files/51951197238.pdf
    • https://cdn.shopify.com/s/files/1/0430/7048/8730/files/23918447418.pdf
    • https://cdn.shopify.com/s/files/1/0429/0979/4463/files/70218829576.pdf
    • https://cdn.shopify.com/s/files/1/0431/5434/2042/files/fallout_4_mods_load_order.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_off00004e73.bin
9d86929fb69709b5cced4e0dca34e4452a641c067cea9ce0595c493d1c14d580		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E73 5812 bytes
font_01_sfnt_off00006220.bin
d5fd1fe79664187752f5519bb9f0d92a63e78b96691d80599bef93f88bafa7de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6220 10540 bytes

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