Malicious PDF — malware analysis report

Static analysis result for SHA-256 24c10e0f1f9ed43b…

MALICIOUS

PDF

40.7 KB Created: 2020-10-09 11:08:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7991377984d742afba0476f2592dd112 SHA-1: 55a731ca8f75414e72b28b47fe2a665d919330a1 SHA-256: 24c10e0f1f9ed43b1c6d3f2cb80aa878a7ce899034938b52b7ffb038c8a044ed
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, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a likely attempt to leverage link farms for SEO manipulation or to redirect users to malicious content. The document body itself is heavily obfuscated and contains a URL that matches the malicious redirector, suggesting it's part of the lure. 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://gettraff.ru/pify?keyword=en+este+objeto+puedes+ver+lo+que+escribes+con+la+computadora
    • http://wugiwa.blastedriveraussies.com/uploads/1/3/1/0/131070420/zetunatudevepi-xilolop-zekukajovag.pdf
    • http://files.rta-ot.com/uploads/1/3/2/6/132695836/5295392.pdf
    • http://garamum.superdocspak.com/uploads/1/3/0/7/130775545/noluluvep.pdf
    • http://zefadegol.bboybgirllifestyle.com/uploads/1/3/0/7/130775176/0ef63.pdf
    • http://rapeku.benevit.org/uploads/1/3/0/9/130969663/4312039.pdf
    • http://gosotes.evolutionsbiologie-uni-konstanz.com/uploads/1/3/2/7/132741064/211848.pdf
    • http://kepak.thecanvasofmylife.com/uploads/1/3/2/8/132814975/5125307.pdf
    • https://cdn.shopify.com/s/files/1/0431/6548/3172/files/30502562469.pdf
    • https://cdn.shopify.com/s/files/1/0437/1139/8039/files/decatur_county_schools.pdf
    • https://cdn.shopify.com/s/files/1/0429/5399/8487/files/mrs_funnybones_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/6209/9109/files/heretic_shadow_of_the_serpent_riders_levels.pdf
    • https://cdn.shopify.com/s/files/1/0482/7208/1051/files/rabbits_and_wolves_tempeh.pdf
    • https://cdn.shopify.com/s/files/1/0484/8055/1073/files/ruth_st_denis_and_ted_shawn.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_off00005ce8.bin
7115ef6b0e357f322842c39c876482e70d0bb48c23ee449db63f936ae1a68d11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE8 5580 bytes
font_01_sfnt_off00006fcd.bin
749bfe744204e265bb0baa5826ac2e9ab9d3f927878e9048b51ad6575f43daf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCD 11040 bytes

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