Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c970cc135fa89b9…

MALICIOUS

PDF

41.1 KB Created: 2020-08-01 15:46:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ab3d20b998d71642986fedd6cdcfeec SHA-1: e0a004bfdf5fbeb9f761b3aa3d65bf28d69ca40a SHA-256: 4c970cc135fa89b9ff254c7b3cd74569178f51081555a185446bd9fbb22f3b54
120 Risk Score

Malware Insights

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

The PDF was flagged for containing a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. One prominent URL, 'https://ttraff.ru/pify?keyword=introduction+to+analysis+wade+pdf', is identified as a malicious redirector. The document body itself is largely unreadable, but the presence of numerous links, including the malicious redirector, strongly suggests a malicious intent related to link distribution and redirection.

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.ru/pify?keyword=introduction+to+analysis+wade+pdf
    • http://files.woodpalooza.com/uploads/1/3/0/9/130969459/fijori-rewomibigonog.pdf
    • http://files.tylerwaynegriffin.com/uploads/1/3/1/4/131454286/5e03f99.pdf
    • http://files.blackandright.net/uploads/1/3/0/8/130874204/wizafopopi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0436/1895/files/31251416338.pdf
    • https://cdn.shopify.com/s/files/1/0435/9821/7374/files/muwafabexopowoloralusa.pdf
    • https://cdn.shopify.com/s/files/1/0437/3390/9665/files/12989594660.pdf
    • https://cdn.shopify.com/s/files/1/0432/5674/2046/files/1684072469.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/38631964455.pdf
    • https://cdn.shopify.com/s/files/1/0434/4207/7852/files/togisekiregamebatufux.pdf
    • https://cdn.shopify.com/s/files/1/0431/2609/6036/files/fefige.pdf
    • https://cdn.shopify.com/s/files/1/0429/6327/1833/files/sovaxoti.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/25887987963.pdf
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/ponazevigifofuroxuxojomit.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/47618244810.pdf
    • https://cdn.shopify.com/s/files/1/0431/5552/1695/files/baripepuxosisipokemifuzeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/7066/0508/files/8732643487.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_off000062ec.bin
088a45e41da01559f60fb68fcb91a79f83056f9c3241254360c60d9ff3fb0f06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62EC 5280 bytes
font_01_sfnt_off00007507.bin
beeb6a8bad034b10eeb803bdb2e7f85c9a7cccab599e0e568c9466848629bfb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7507 10064 bytes

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