Malicious PDF — malware analysis report

Static analysis result for SHA-256 605c5f9b527f01f5…

MALICIOUS

PDF

41.5 KB Created: 2020-09-17 19:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84e066e7dc5ff7ccdb187995bf8bcd5a SHA-1: 5a1c1547911da73d6da6301943c1ca639169b1e4 SHA-256: 605c5f9b527f01f582b86e285bf5f2dea80c6e8b9dbb1808d2898e7e055d28b8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with the primary heuristic identifying a link to a known malicious redirector. The document body also contains the URL 'https://ttraff.club/wix?keyword=burn+notice+netflix+uk', suggesting a lure to a malicious site. The presence of a large number of external PDF links further indicates a link farm or redirection scheme designed to lead users to potentially harmful content.

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.club/wix?keyword=burn+notice+netflix+uk
    • http://files.bedfordpolicedepartment.com/uploads/1/3/1/4/131437085/5614523.pdf
    • http://rinirol.rafikitravel.com/uploads/1/3/1/4/131438137/fozaputajamip.pdf
    • http://files.smartacstore.com/uploads/1/3/1/4/131407493/7c7638512ecc5.pdf
    • http://files.astronomymoncton.org/uploads/1/3/1/6/131636655/cb911c.pdf
    • http://files.suitlandhsfeasibilitystudy.com/uploads/1/3/1/6/131606159/1611714.pdf
    • http://rataj.ctshakerfurniture.com/uploads/1/3/1/8/131856809/lopigitukixunopadewu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/9602/1919/files/pepobi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4226/5498/files/58509385414.pdf
    • https://7ee8ab93-3c0d-4c40-8037-370d7484e02c.filesusr.com/ugd/46bfb0_ba718245816444c29143eb0bc004753b.pdf?index=true
    • https://27b88d9a-0b42-4882-bdfb-7d344708c4b4.filesusr.com/ugd/234f58_6b8872f956db4875bd5f07b06da662a8.pdf?index=true
    • 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_off000065c6.bin
6c0e349bffd756c76829bd88a09fc26da7723a0b8d37fe2450f2adb18e89e80e
pdf-font-stream PDF embedded font (sfnt) at offset 0x65C6 4668 bytes
font_01_sfnt_off000075c3.bin
11dc8435dab63b0150c42b0ef5fa2d4bafcdef6a9cfc16a4b167eae1132a7d6b
pdf-font-stream PDF embedded font (sfnt) at offset 0x75C3 10468 bytes