Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc5d5d39a9d719a7…

MALICIOUS

PDF

53.6 KB Created: 2020-08-22 02:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abb629b0be7757900802cbace7b41f2a SHA-1: f6d2574e11a11b2d0da179714777f7a41503bf0f SHA-256: cc5d5d39a9d719a778faaf4f620bc563faf885848a05ec480ecef48d46984e43
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identifies a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to malicious content. The presence of many external PDF links, including one hosted on cdn.shopify.com, suggests an attempt to manipulate search engine results or distribute further malicious payloads. The ML classifier also strongly indicated 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.cc/pify?keyword=ganpati+aarti++bestwap
    • http://files.gwgproductions.com/uploads/1/3/0/7/130775195/55cad2e5f02f8e6.pdf
    • https://cdn.shopify.com/s/files/1/0435/4703/3752/files/telebonamazutoxorukogera.pdf
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/altered_traits_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0434/1861/5975/files/ffxiv_act_plugin.pdf
    • https://cdn.shopify.com/s/files/1/0429/6133/8531/files/dewozivugerevufuzuzupuju.pdf
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/balancing_equations_challenge.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6152/files/libros_de_autolesion.pdf
    • https://cdn.shopify.com/s/files/1/0429/2778/4095/files/orange_in_rgb.pdf
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/ladomesusaroxukeko.pdf
    • https://cdn.shopify.com/s/files/1/0435/8216/1053/files/christ_college_bangalore_uniform.pdf
    • https://cdn.shopify.com/s/files/1/0432/2715/2539/files/60083955968.pdf
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/xodumamusitaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1808/files/aapc_cpc_study_guide.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_off00008ea6.bin
62b37158b8fb14863c5bbdca3ed1cb440b216e900e29e140035bff09e80e6ac8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA6 5044 bytes
font_01_sfnt_off00009fee.bin
280042d5803928a63b3eeda82fff6f46617dcc6a5360a551ef120d7a4c0410ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FEE 12864 bytes

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