Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3dad21a68148a37…

MALICIOUS

PDF

43.8 KB Created: 2020-08-01 04:19:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54ccd43628b8532b39270af257101ce0 SHA-1: f5ef468667f0ed1da5f26347ae32c52c98920c7c SHA-256: a3dad21a68148a372d06a9e26fee63f82f22e98940c31b7b7dacc937072fc87b
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=caltrain+go+pass', suggesting a lure for phishing or malware delivery. The presence of numerous PDF links hosted on Shopify and other file-sharing services indicates a potential SEO-based distribution strategy.

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=caltrain+go+pass
    • http://files.meadowbrookpololodge.com/uploads/1/3/2/7/132740805/jererepi.pdf
    • http://files.gourddivas.com/uploads/1/3/0/9/130969332/remasive-kekafoxefokib-karidif.pdf
    • http://files.brushmountainmedia.com/uploads/1/3/0/7/130738719/fc7113a.pdf
    • http://files.golfeuropeexperience.com/uploads/1/3/0/7/130740257/gafuku-wixupudod-selarojasekowod-zijaxaje.pdf
    • http://files.cgfcjesusislord.org/uploads/1/3/1/1/131163590/vazokixubunom.pdf
    • https://cdn.shopify.com/s/files/1/0439/1115/1768/files/75895225327.pdf
    • https://cdn.shopify.com/s/files/1/0431/9677/6607/files/61690101895.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/mogubelejaxonexasusep.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/rivesurivuroza.pdf
    • https://cdn.shopify.com/s/files/1/0431/8121/1810/files/ponobelupozuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdf
    • https://cdn.shopify.com/s/files/1/0439/2206/3515/files/star_wars_resource_packs.pdf
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/24882808451.pdf
    • https://cdn.shopify.com/s/files/1/0431/2141/0210/files/tisidovepajitunexabo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6844/0232/files/zawojulifigutarorapikiki.pdf
    • https://cdn.shopify.com/s/files/1/0437/5350/4917/files/77901633137.pdf
    • https://cdn.shopify.com/s/files/1/0430/5456/3477/files/55591376058.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4551/files/bafujatuwulejojupagav.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_off00006d12.bin
dfe227100fb8c8a2fafb009607f3342f96aa98ed211f4e27b5cc5a722155568c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D12 4892 bytes
font_01_sfnt_off00007dc3.bin
64889afeb9010ca6d9abeb10009d76bbccf06e545934ca4ebe9c53143331692e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC3 10784 bytes

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