Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c3b65f22c40a60e…

MALICIOUS

PDF

45.1 KB Created: 2020-08-26 06:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5991ddba9bc42d1a1c04ede3e75d4a5e SHA-1: c484af39c090e3ee656e545c4a98bcb9b079ae39 SHA-256: 9c3b65f22c40a60ec8648b1217ee028bda0a9c883fd5981dab8cc5d2d22dae62
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, forming a link farm. One of these links directs to a known malicious redirector at 'https://ttraff.com/pify?keyword=how+to+knit+fingerless+gloves+on+a+r'. The presence of numerous PDF links, many hosted on Shopify, suggests an attempt to manipulate search engine results or distribute further malicious content. No scripts were extracted from this sample.

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=how+to+knit+fingerless+gloves+on+a+r
    • http://files.kruoutdoors.com/uploads/1/3/0/7/130739074/5a8519e1d85cd51.pdf
    • http://tubok.rosemarygallagher.com/uploads/1/3/0/8/130814328/lokabupaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/6992/3743/files/81169268084.pdf
    • https://cdn.shopify.com/s/files/1/0461/8456/2851/files/77884475998.pdf
    • https://cdn.shopify.com/s/files/1/0433/8201/4108/files/88521165491.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/79809414286.pdf
    • https://cdn.shopify.com/s/files/1/0435/7878/5951/files/94884220895.pdf
    • https://cdn.shopify.com/s/files/1/0435/6577/7059/files/bumoxixuta.pdf
    • https://cdn.shopify.com/s/files/1/0430/9064/1045/files/how_to_audio_tracks_from_soundcloud.pdf
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/positive_affirmations_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/26957067672.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3671/files/opengl_programming_guide_9th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1653/5720/files/kukaduberijob.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_off000072a3.bin
ae8708891230642807cddc02868567b19961a8bd3d1af57ead17a7b89b00856a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72A3 5112 bytes
font_01_sfnt_off00008431.bin
b71c54e04e0d901a69ea4c18f0734c9a2842d4c3138f70dfcd24a2c6032e65e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8431 10352 bytes

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