Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a223c19a78eb6f…

MALICIOUS

PDF

46.4 KB Created: 2020-08-07 01:18:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f3b7a869071c2273b93f1715c762e2e2 SHA-1: 995452df248948a228d6de5d00b5dd4e9ccc77f3 SHA-256: 80a223c19a78eb6fcf3660ca063eecbbb90744f15b5fc3486037cbc73dd848f8
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/wb?keyword=narnia%20chapter%201%20pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/wb?keyword=narnia%20chapter%201%20pdf
    • http://files.lakeokarekapreschool.co.nz/uploads/1/3/1/4/131453005/temow.pdf
    • http://vuburiwew.ugasmis.com/uploads/1/3/2/7/132710797/mazilowibubaposi.pdf
    • http://files.bcocon.com/uploads/1/3/1/4/131482988/9109723.pdf
    • http://files.veroandcostudio.com/uploads/1/3/2/6/132695399/6044800.pdf
    • http://files.virginiafilippousi.com/uploads/1/3/1/4/131413148/3033445.pdf
    • http://files.bco
    • https://cdn.shopify.com/s/files/1/0437/6333/5319/files/disosuledagozexatibaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/zoxutapevuzuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/4875/4600/files/coastal_grand_mall_movie.pdf
    • https://cdn.shopify.com/s/files/1/0437/4937/6149/files/ap_biology_textbook_campbell_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/6281/9990/files/arcane_trickster_5e_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/8788/7510/files/23625398291.pdf
    • https://cdn.shopify.com/s/files/1/0430/9132/9173/files/58661574880.pdf
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/foruteketa.pdf
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/61943564369.pdf
    • https://cdn.shopify.com/s/files/1/0436/3668/7008/files/network_security_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/5478/3893/files/cents_symbol_alt_code.pdf
    • https://cdn.shopify.com/s/files/1/0439/1357/6603/files/dixujubaledutevaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/9435/1778/files/fazoveda.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_off000079aa.bin
d28dd79aad11052cfcfd1160ddcda3cc90e47fa068eeb6b94ae4137f086a0fa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79AA 5056 bytes
font_01_sfnt_off00008ae4.bin
63333232fb3133fcc3b8a752bf686856c9b2e4386b03de893d09f30afca054f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE4 9836 bytes

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