Malicious PDF — malware analysis report

Static analysis result for SHA-256 f26ed7bcbc82956f…

MALICIOUS

PDF

50.0 KB Created: 2020-09-03 22:53:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63692f3aad874a905b0ac179cca151e7 SHA-1: 7ac6c24106c40608525b5fccb302b4c8c1a487d2 SHA-256: f26ed7bcbc82956fe8f18b7ae97b3d43f7863b9e5f683cc9b82e4736e0eb3be9
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, which is also present in the document body. This link, 'https://ttraff.link/wix?keyword=silk+browser+apk+for+mi+tv', is designed to lure users into downloading potentially malicious software. The file also exhibits characteristics of a link farm, with numerous external PDF links, suggesting a broader campaign 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.link/wix?keyword=silk+browser+apk+for+mi+tv
    • https://static.usrfiles.com/ugd/b8c837_6284ee5ef7f74cc293fa6d99cbb42d45.pdf
    • https://static.usrfiles.com/ugd/3be3a7_4d5447c80ff443adabbe73abbe44d397.pdf
    • https://static.usrfiles.com/ugd/e643da_0aa5aedd700d4a54aeede807be932be3.pdf
    • https://static.usrfiles.com/ugd/957c7b_87f6c2db4ae2451585ec8a01ae106a30.pdf
    • https://static.usrfiles.com/ugd/a1fb72_7882d0f8703b49a194b7878b0652cd50.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/owa_lifetimefitness_com.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1085/files/36468302827.pdf
    • https://cdn.shopify.com/s/files/1/0436/4946/6526/files/55780018668.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/lunagamolevinog.pdf
    • https://cdn.shopify.com/s/files/1/0432/3331/2925/files/89585377355.pdf
    • https://cdn.shopify.com/s/files/1/0439/8258/6014/files/the_lucky_one_nicholas_sparks_book_r.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6695/files/22724223164.pdf
    • https://cdn.shopify.com/s/files/1/0433/3548/3551/files/ecosystems_and_biomes_worksheets.pdf
    • https://static.usrfiles.com/ugd/bae363_5198725838d348e6a20940e8c71b7c54.pdf
    • https://static.usrfiles.com/ugd/0df15e_c9a433f9663648acbc6a8e87959a3b90.pdf
    • https://static.usrfiles.com/ugd/7aabb2_928f18a4fa8645e487159ca286cc5ace.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_off0000848b.bin
e1cda5fa500a363825d6aa28f199668595da629b1c9a1d44fcfcdf8c278d52d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x848B 5504 bytes
font_01_sfnt_off00009747.bin
9beaacadfe82b6e80b6101fd714cec6e797f63f693be7267298556179d2b7ddf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9747 10480 bytes

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