Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c09daa237ac4456…

MALICIOUS

PDF

40.0 KB Created: 2020-08-24 05:03:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd776b5aacbe387263927ba8261278e7 SHA-1: c9b8695a7c6079f544cca3a84fa20cd86e43d7e2 SHA-256: 5c09daa237ac445624bd6d36b505ff245393cbb082bea73d3d6838f65ffa6d2a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a waste management plan template. This redirector likely leads to further malicious content or malware. The presence of numerous external PDF links, many pointing to benign Shopify domains, suggests a link farm or SEO manipulation tactic to obscure the malicious redirector. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing or redirection attack.

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.com/pify?keyword=waste+management+plan+template+northern+beaches+council
    • http://files.twyfi.org/uploads/1/3/1/8/131856125/wawabedejorubazexume.pdf
    • http://lenamafe.triadsbesthvac.com/uploads/1/3/1/4/131453033/fameba-dilas.pdf
    • http://files.johannadunaway.com/uploads/1/3/0/7/130739488/71b27f2ac77.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/daxewaxosenupiradizelufar.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/72730740735.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/36330168616.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/95358791371.pdf
    • https://cdn.shopify.com/s/files/1/0434/5954/3192/files/19389364507.pdf
    • https://cdn.shopify.com/s/files/1/0433/5665/1669/files/romorubuxitukuru.pdf
    • https://cdn.shopify.com/s/files/1/0432/4222/5831/files/37474419127.pdf
    • https://cdn.shopify.com/s/files/1/0437/7129/7943/files/beginner_piano_songs.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_off00005d62.bin
04f52f585d88d159ae673b535cb058bd4e237d9459ae69bbe46b208c1fc7d72e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D62 5500 bytes
font_01_sfnt_off00006fef.bin
65e18d7b828cba62f0c12146ccfbd7a092708f530c6a01c174c4ed82d9818866
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEF 10236 bytes