Malicious PDF — malware analysis report

Static analysis result for SHA-256 86d5d406f2bf8473…

MALICIOUS

PDF

52.2 KB Created: 2020-07-29 02:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 320ba6f401f66dbaf32d7138ab759171 SHA-1: 645eca54641c104b1de80c44ee5fe1f30bd194f8 SHA-256: 86d5d406f2bf8473cc9c5811bde8e34e011d682074d243b888f9a758d0110ae3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to known malicious redirector infrastructure at 'ttraff.com'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm used for SEO manipulation or to distribute malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful sites.

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=appendix+psychology+report
    • http://files.andyfowlie.com/uploads/1/3/2/7/132740533/vitozuzezigu.pdf
    • http://files.thirdcinemaproductions.com/uploads/1/3/1/3/131379749/sonazez.pdf
    • http://files.myhappyplacekennelandexotics.com/uploads/1/3/0/7/130739343/kisozijapupimep_tegoxasijavim.pdf
    • http://files.sneakersmeetheels.com/uploads/1/3/1/3/131380440/f84bdb.pdf
    • http://files.kamraton.org/uploads/1/3/2/6/132682607/5860064.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/5479/1846/files/83556221808.pdf
    • https://cdn.shopify.com/s/files/1/0428/4717/4812/files/napawawol.pdf
    • https://cdn.shopify.com/s/files/1/0436/0772/0094/files/zasukimebisekemivipirovov.pdf
    • https://cdn.shopify.com/s/files/1/0429/6930/1151/files/81248233704.pdf
    • https://cdn.shopify.com/s/files/1/0428/3134/7868/files/rumikoxu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/daluzubona.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/64138071925.pdf
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/rojogudanuwapodu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/zububumarufovuxopaxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4172/6370/files/wofobi.pdf
    • https://cdn.shopify.com/s/files/1/0439/1917/9931/files/fizad.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/20002428182.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_off00008f63.bin
9164f7cc4098731e17ab4adaa75ce656c52d67b1ba357bf80f1fc33c02d5da51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F63 5072 bytes
font_01_sfnt_off0000a0a2.bin
b4b8eeddb55707ae51ae71190d161dfeea36cdaaba143ba932628a36ed1164f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0A2 10192 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.