Malicious PDF — malware analysis report

Static analysis result for SHA-256 01b9f34e965beefb…

MALICIOUS

PDF

63.4 KB Created: 2020-08-20 18:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4049814d40759127fbd35dd0315a7826 SHA-1: 610988fb431b5a7f877ae749af7e857fcf217727 SHA-256: 01b9f34e965beefb753fde9c12a000bb38921330864be0ec3736d5dbda0621df
154 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a mass of external links, including a redirector to 'ttraff.cc', suggesting a link farm or phishing lure. The embedded URL 'https://ttraff.cc/pify?keyword=brickell+key+court+reporting+naples' is a primary indicator of malicious intent, likely leading to a malicious site or further payload. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=brickell+key+court+reporting+naples
    • http://xepenupe.jessejaymestattooco.com/uploads/1/3/0/8/130873804/9276746.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9574/3907/files/papoboragutux.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/pudulok.pdf
    • https://cdn.shopify.com/s/files/1/0438/3267/2418/files/59606007130.pdf
    • https://cdn.shopify.com/s/files/1/0433/9544/8997/files/33837458315.pdf
    • https://cdn.shopify.com/s/files/1/0430/8733/1481/files/sowazitapovikikijuzisaniw.pdf
    • https://cdn.shopify.com/s/files/1/0430/1497/9737/files/87276745185.pdf
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/xaxumu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2440/8988/files/61627792064.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/sudekuvatijesobarefefe.pdf
    • https://cdn.shopify.com/s/files/1/0435/9018/9219/files/5673609308.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a8b7.bin
ca0d00293f4bd0840d0d49c38b9f59fd418212218642af74d6cf068a6f7bc287		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8B7 5316 bytes
font_01_sfnt_off0000bae6.bin
d2027171a9df07fc8ccfc42bb3d67521f3f608669af8ec157d57b74f27ab6be2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAE6 16720 bytes

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