Malicious PDF — malware analysis report

Static analysis result for SHA-256 96950b6d3b274135…

MALICIOUS

PDF

36.1 KB Created: 2020-08-03 15:57:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96dea549f8ac27376defcee7b34329cc SHA-1: 7d5dc7c672145fc94d02fd41a03414f55d5ea7a8 SHA-256: 96950b6d3b274135eba4a339900ff83ce2a7addf457b84b754bed09a34fa0390
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary URL, https://ttraff.com/pify?keyword=calendario+octubre+2020+mexico+pdf, is identified as a malicious redirector. Another heuristic indicates a link farm hosted on Shopify, with the first URL being https://cdn.shopify.com/s/files/1/0428/0814/8127/files/teliponoluguwaw.pdf. The ML classifier also strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=calendario+octubre+2020+mexico+pdf
    • http://files.quilteddesires.com/uploads/1/3/1/1/131164479/rivunilununulemi.pdf
    • http://files.gracekuchmusic.com/uploads/1/3/1/4/131437037/wukulejonikowodusow.pdf
    • http://files.judithfuchsphotography.com/uploads/1/3/0/8/130873795/kezerukofaduzoxalupu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0814/8127/files/teliponoluguwaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/38659037606.pdf
    • https://cdn.shopify.com/s/files/1/0431/5077/0333/files/jefebuke.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/63532356392.pdf
    • https://cdn.shopify.com/s/files/1/0434/7622/2114/files/36959559320.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66083684812.pdf
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/cowboy_bebop_movie_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0437/2047/4779/files/xurejeniwaji.pdf
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/differential_equations_4th_edition_blanchard_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/ditofegidosoxefonebok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50878135704.pdf
    • https://cdn.shopify.com/s/files/1/0434/9621/0594/files/41361751387.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_off000047ef.bin
0398e00de3ef0b0611dad53e3f5dce410577554b10e2eb60903345f83d041fc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47EF 5508 bytes
font_01_sfnt_off00005a90.bin
ae016a54d6250ef58a934e22aa5cd61fb1adac77f7b7dfe5f9f61db188a7443d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A90 12896 bytes

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