Malicious PDF — malware analysis report

Static analysis result for SHA-256 31e51743cf20d287…

MALICIOUS

PDF

38.2 KB Created: 2020-08-02 03:34:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c080df3f9594c3a1ed1cc60c62977895 SHA-1: ad5f149b4276a087186c90fd709cd8d85c61278c SHA-256: 31e51743cf20d287989085bc3e5057158108355525d06948e7733be44072cdff
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links redirects to a malicious URL, ttraff.cc, which is likely used for further redirection or to host malicious content. The document body contains text related to a local business search, suggesting a phishing or scam lure. No scripts were extracted from this sample.

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=lowes+statesboro+ga
    • http://files.smggraphics.com/uploads/1/3/1/4/131437130/1540338.pdf
    • http://files.microworldreflections.com/uploads/1/3/1/1/131164211/ramin_filujise.pdf
    • http://files.studyingdaily.com/uploads/1/3/0/7/130775448/7824304.pdf
    • http://files.tamsynvanrheenen.com/uploads/1/3/2/8/132814022/5233260.pdf
    • https://cdn.shopify.com/s/files/1/0435/5578/2817/files/93468964885.pdf
    • https://cdn.shopify.com/s/files/1/0430/4922/2298/files/44604569238.pdf
    • https://cdn.shopify.com/s/files/1/0430/8962/5250/files/kezomapaworiroxavu.pdf
    • https://cdn.shopify.com/s/files/1/0439/1282/2939/files/minecraft_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0438/6874/9979/files/98396883882.pdf
    • https://cdn.shopify.com/s/files/1/0435/2373/5720/files/bozip.pdf
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/dunomomovidol.pdf
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/17724782719.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24863128440.pdf
    • https://cdn.shopify.com/s/files/1/0430/8752/8103/files/36222590641.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_off000058bd.bin
18b3354a240a0a4e91189b0eb40443351b5c9781836523c2fc2d962752df0c81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58BD 4996 bytes
font_01_sfnt_off000069e1.bin
92acd07b129579608be8269fe7aa7d1a53ea2fcadfb483660d47e7caf7a7aeba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69E1 10344 bytes

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