Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ce64439600c6564…

MALICIOUS

PDF

35.5 KB Created: 2020-08-21 23:06:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfb5dd77e2e1aa00c87f0ddaecce626a SHA-1: c659f5a3f3c1b87c310127e9d7ea8d46555871e5 SHA-256: 4ce64439600c65640584e1c0e0da979a0dbcab2db5836911e1ce1608993b5436
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a tactic often used to obscure malicious destinations or to create link farms for SEO poisoning. One of the embedded URLs, 'https://ttraff.cc/pify?keyword=chillar+party+movie++dvdrip', is identified as a malicious redirector. The presence of numerous links to PDFs hosted on Shopify, combined with the malicious redirector, suggests an attempt to lure users to malicious content, potentially for phishing or malware distribution.

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=chillar+party+movie++dvdrip
    • http://files.bartlettandgoldgallery.co.nz/uploads/1/3/2/6/132681494/nifulilujef.pdf
    • http://files.swiminfoct.com/uploads/1/3/0/8/130813111/4882305.pdf
    • https://cdn.shopify.com/s/files/1/0429/6641/7567/files/pagexemalekatidad.pdf
    • https://cdn.shopify.com/s/files/1/0434/7078/2614/files/golulokugimepides.pdf
    • https://cdn.shopify.com/s/files/1/0430/1111/3123/files/brother_xl2600i_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/2518/7491/files/timowadafusukuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/2987/2292/files/babul_ka_ghar_dj_song.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5079/files/fojex.pdf
    • https://cdn.shopify.com/s/files/1/0430/8366/1461/files/anatomia_de_cabeza_y_cuello_para_odontologos_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8095/files/cthulhutech_mortal_remains.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/wituvi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8664/files/sikuwegexisulexul.pdf
    • https://cdn.shopify.com/s/files/1/0434/8231/6957/files/61500975740.pdf
    • https://cdn.shopify.com/s/files/1/0434/2710/2876/files/asme_y14._5.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_off00004be0.bin
d888d32de4da5dac88b21054516541c49373887bf342b52d91ec57df078f0a18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BE0 5088 bytes
font_01_sfnt_off00005d0e.bin
9f459db4cd32c24e2865021ecb1d1ff88c5b0367ed17620157d7e3564be73282		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0E 10608 bytes

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