Malicious PDF — malware analysis report

Static analysis result for SHA-256 822ced34880bd8f4…

MALICIOUS

PDF

77.0 KB Created: 2020-04-12 19:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7f1c78c3c3ffec47c5d2e8c2cedb4867 SHA-1: 7f5c4db3f93c0f6b44fee8591d8fd882f10db3f9 SHA-256: 822ced34880bd8f4e078a9a6a658e17a18412d282237f2c542efa34146f09c60
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or content distribution network. The document body contains garbled text and a URL that appears to be part of this link farm. No scripts were extracted from this sample.

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://trancurabiosciences.com/uploads/1/3/0/5/130538891/130538891.html#mr+blue+in+reservoir+dogs
    • http://tsbrepairs.com/uploads/1/3/1/3/131379392/4200566.pdf
    • http://cierraprideart.com/uploads/1/3/0/7/130775111/manet.pdf
    • http://jt1express.com/uploads/1/3/1/4/131438556/tiridifujuxiwoxap.pdf
    • http://heatherscustomcookies.com/uploads/1/3/0/8/130873915/4096256.pdf
    • http://alchemystudiosalon.com/uploads/1/3/0/8/130814492/pikovup.pdf
    • http://breastfeedingafterhours.com/uploads/1/3/0/6/130603832/lugoxutiveva-rugawo-dipem-wifab.pdf
    • http://heavensearthlyriches.info/uploads/1/3/0/2/130288502/3659628.pdf
    • http://bigleaguepoolservice.com/uploads/1/3/0/5/130590589/ee75ef1c967.pdf
    • http://happybrownbag.com/uploads/1/3/1/1/131164114/ranarugobarug.pdf
    • http://summitacademyma.com/uploads/1/3/0/8/130813982/300306.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_off0000f498.bin
9150ed8438c9541e3a48b8e4b0f7eb6adaed37214ca604f0bfd80b1f4401cb0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF498 10604 bytes
font_01_sfnt_off00011ae7.bin
03661da1e563d1e912079446e49acc05d76782d51116285d166da8d538a3ad85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AE7 4092 bytes

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