Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0788af3bd15a403…

MALICIOUS

PDF

45.7 KB Created: 2020-04-10 22:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6618d404339ab2857fd993dddb6b7fea SHA-1: b5d8fd2b975c241b30571f344578cdad14dacb3c SHA-256: c0788af3bd15a403bed007cdb1ab9a21963962070b0d36f9ac719d4f25e7297f
62 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The embedded document body text, though heavily obfuscated, contains a URL that is also present in the list of extracted URLs. The primary attack pattern appears to be directing users to a network of external resources, potentially for malicious purposes such as distributing further malware or phishing.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://thehappygirlstore.com/uploads/1/3/0/8/130874332/130874332.html#riptide+sheet+music+flute
    • http://condorvisuals.net/uploads/1/3/1/4/131437833/lajalef.pdf
    • http://duanzhihong79.com/uploads/1/3/1/3/131378968/majivon.pdf
    • http://alistdecor.com/uploads/1/3/0/4/130483614/zegesegerinelimub.pdf
    • http://batesleisure.com/uploads/1/3/0/7/130739904/326a935837.pdf
    • http://radical1s.com/uploads/1/3/0/4/130477755/18500.pdf
    • http://farnorthaviation.net/uploads/1/3/0/8/130814652/fekoguj.pdf
    • http://muthabuchakombucha.com/uploads/1/3/0/2/130271102/6153414.pdf
    • http://proactivetherapies.com/uploads/1/3/0/9/130969682/zawute_faxepetesarejok_fepobov.pdf
    • http://3iconstructora.com/uploads/1/3/1/3/131384530/kesuv.pdf
    • http://zyss.fi/uploads/1/3/0/6/130604860/1932576.pdf
    • http://mariettasquarefarmersmarket.net/uploads/1/3/0/6/130621836/1990423.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_off00007362.bin
c8ff6378ecdf5fb8b21b3ce4a07fc4cf9a836642c3629138dc56b4e8ef014d80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7362 9220 bytes
font_01_sfnt_off00009670.bin
0d355b956a9dff8708fe1b1ecbbec6815800202606c49a7e1bd1898687aadaa0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9670 16120 bytes

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