Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9440486ab823212…

MALICIOUS

PDF

69.0 KB Created: 2020-08-04 20:33:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41223e6a242a136fe49282f4e1b4ed52 SHA-1: f885104e6a88e0d00be9d63b394748aa2b736a73 SHA-256: d9440486ab8232122f50d10f8874b8f88cfb26db86fc69540c763d3c566f8751
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=medical+laboratory+quality+manual+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0431/1734/6982/files/88097553677.pdf'. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure. The primary attack pattern involves tricking the user into clicking the malicious link.

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.com/pify?keyword=medical+laboratory+quality+manual+pdf
    • http://files.harmonyyogauk.com/uploads/1/3/1/6/131637014/karaxo-pafobidememe-senibo-xulipizivalus.pdf
    • http://files.barbrarian.com/uploads/1/3/1/6/131607063/e1ac2912.pdf
    • http://files.vanjacelebicic.com/uploads/1/3/1/4/131453451/5be462.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6982/files/88097553677.pdf
    • https://cdn.shopify.com/s/files/1/0431/3550/0439/files/muzikijel.pdf
    • https://cdn.shopify.com/s/files/1/0431/2494/9153/files/kiwozusi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8996/0861/files/98883680482.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/55376868673.pdf
    • https://cdn.shopify.com/s/files/1/0437/8309/4434/files/dobitotalumidewuzozut.pdf
    • https://cdn.shopify.com/s/files/1/0429/3463/2607/files/jokajojukiseg.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/james_rollins_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/86957091224.pdf
    • https://cdn.shopify.com/s/files/1/0434/0957/1990/files/pigogup.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_off0000d15d.bin
1e63563d76fe59170b40654b5803794b08fb2715489d1a38cdf5c5cf78706481		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD15D 5496 bytes
font_01_sfnt_off0000e409.bin
8f6dd7f1e5e7868ea1cb2a79ac2898833996106ce220372e159cec6642126ce3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE409 10288 bytes

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