Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad657ac4e30f7a18…

MALICIOUS

PDF

40.3 KB Created: 2020-09-05 22:10:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7561ba4d390d93e655fea17ee59edd42 SHA-1: cad5adf5bdf62555cd71bc86b80403d38655bae4 SHA-256: ad657ac4e30f7a18c9e1aba4497b0522195c56c53d001ef84ec422524cfbedce
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, which is also present in the document body. This link, 'https://ttraff.link/wix?keyword=free++font+ariston-+normal', is designed to lure users by offering a free font. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, likely for SEO manipulation or to obscure the malicious redirector. The primary attack vector appears to be social engineering through a deceptive 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.link/wix?keyword=free++font+ariston-+normal
    • https://static.usrfiles.com/ugd/0df15e_3099bd80d95b483eb913889b4129c9b7.pdf
    • https://static.usrfiles.com/ugd/2ac701_cb81d3ac2bd440a68ac66c3cdd571060.pdf
    • https://static.usrfiles.com/ugd/455f95_73d0bfe169a142d69b3e036af9fb1d61.pdf
    • https://cdn.shopify.com/s/files/1/0432/9334/3912/files/63680856430.pdf
    • https://cdn.shopify.com/s/files/1/0440/3593/2310/files/43923067711.pdf
    • https://cdn.shopify.com/s/files/1/0428/4379/9719/files/fonts_for_discord.pdf
    • https://cdn.shopify.com/s/files/1/0431/1629/8393/files/64292174385.pdf
    • https://cdn.shopify.com/s/files/1/0432/9144/3364/files/limit_test_for_arsenic.pdf
    • https://cdn.shopify.com/s/files/1/0437/6412/1752/files/totogokeba.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/apa_style_6th_edition_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0436/8554/4089/files/tovixikufunenogefo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/everest_climbers_guide_crossword_clue.pdf
    • https://cdn.shopify.com/s/files/1/0441/1280/6040/files/17859126712.pdf
    • https://static.usrfiles.com/ugd/93c935_aa635e8d46754bb59b0197bff4dcbbd1.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_9b506ffcc0ef4950bee663878422829c.pdf
    • https://static.usrfiles.com/ugd/1fbf8b_d9e8fa8b0e034640b02088b7db795e56.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_off0000626f.bin
305d187e9f07f6e977a77a9bdc09f07bd2f44dec346b1954e9fee2ff71e18ed7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x626F 4900 bytes
font_01_sfnt_off0000730a.bin
f76e5e53c6c381ef7e686665263d1525f27696b9fb3b2e4c5f7bea72766543b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x730A 9888 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.