Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8e4041269e277eb…

MALICIOUS

PDF

47.1 KB Created: 2020-09-03 09:40:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8356cf513575fb3907349fedca89006e SHA-1: ed92d843cc861135fc75681817cf0fec0a335326 SHA-256: f8e4041269e277eb453dd67c550143e3b485ed2ee9f8c691a9547250e19df905
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, 'https://ttraff.club/wix?keyword=android+google+play+music+lyrics', is presented as a lure. The document body, though heavily obfuscated, contains this URL and other benign-looking PDF links, suggesting a social engineering tactic to drive traffic to the malicious site. The presence of a link farm further supports this attack pattern.

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.club/wix?keyword=android+google+play+music+lyrics
    • https://cdn.shopify.com/s/files/1/0437/4836/0343/files/ipratropium_albuterol_duoneb_davis.pdf
    • https://cdn.shopify.com/s/files/1/0432/1122/7300/files/22303779896.pdf
    • https://cdn.shopify.com/s/files/1/0434/1612/5590/files/pukere.pdf
    • https://static.usrfiles.com/ugd/81ef4b_9def87ec6fa2423588eb58357f782e45.pdf
    • https://static.usrfiles.com/ugd/685707_fbcc7b3cee62481898064cb62a85202d.pdf
    • https://cdn.shopify.com/s/files/1/0437/6857/8210/files/ibps_po_notification_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/ethical_considerations_in_social_science_research.pdf
    • https://static.usrfiles.com/ugd/ae15ca_ee5d935f710f4911bb782236a673f442.pdf
    • https://static.usrfiles.com/ugd/79e0dc_6d4f7791346f4218b1bcc91623eed64c.pdf
    • https://static.usrfiles.com/ugd/b8c837_c7e4fed6a1414531bd4851100916ddb1.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_off00007134.bin
542223f4a2886139f9f630749674c449e6cba29643f4dff2ee8edcb4c1e99f32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7134 5484 bytes
font_01_sfnt_off000083ce.bin
f46baa2f474444a2bdda34fd72c71e0e182393485aaca19439e33c0d9d6beb46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83CE 14016 bytes

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