Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe38a6c2a696aa6e…

MALICIOUS

PDF

42.4 KB Created: 2020-08-24 10:13:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5995a641e43fa0e7c209b4516ac4e0ed SHA-1: 412dd7640236854f09a845c4624eccc9b2e9c36a SHA-256: fe38a6c2a696aa6ebb685ba046fc5d7ba34f4640232e6da066015e4cdb6ea035
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, embedding numerous links to PDF files hosted on Shopify. The document body is heavily obfuscated but contains the same redirector URL, suggesting the primary intent is to lure users to malicious infrastructure. 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://ttraff.com/pify?keyword=bairavaa+songs+free++in+starmusiq
    • http://files.nashobavalleyextractco.com/uploads/1/3/1/8/131872087/dawofiteseribetiber.pdf
    • http://files.harrisburghigh.org/uploads/1/3/1/3/131379371/d7ff44.pdf
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/78689823553.pdf
    • https://cdn.shopify.com/s/files/1/0433/8355/4202/files/berlitz_english_level_10.pdf
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/47428836224.pdf
    • https://cdn.shopify.com/s/files/1/0433/3358/2998/files/sogizuwivi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/chikati_gadilo_chithakotudu_telugu_movie_hd.pdf
    • https://cdn.shopify.com/s/files/1/0434/0439/4661/files/nabokokidakesuvowes.pdf
    • https://cdn.shopify.com/s/files/1/0432/9367/1590/files/divodunenojafefewojere.pdf
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/73056646292.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_off00005b95.bin
ea1aa369a03456c5920a3e6cd0b1d2f9ab0efaf4c90cfbbabb2fc22b8ebb56e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B95 5292 bytes
font_01_sfnt_off00006d88.bin
6ba0570c4ae0dc50520813d028ee70e80806d86aa719a54f1ae147273204bff7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D88 14724 bytes

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