Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3cdbabb9032c163…

MALICIOUS

PDF

32.3 KB Created: 2020-04-04 07:21:12 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 40cdbb914cf1abacca912b4f7aad5b92 SHA-1: 60c8469a764f8557af5bd39ec24dbae2f8add680 SHA-256: c3cdbabb9032c1631d0545b5fe2a90ed69965506f1bfff849fc2c2ac74aee0c6
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to various domains, many of which appear to be part of a link farm designed for SEO manipulation. The primary heuristic identified a mass external PDF link farm, suggesting a malicious intent to redirect users or host malicious content. No scripts were extracted from this sample, limiting the ability to determine the exact payload or further actions.

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://drpatty.net/uploads/1/3/0/7/130775700/130775700.html#imaginarium+express+premium+train+table
    • http://vmhservices.net/uploads/1/3/0/6/130603771/vadeve-runiforomason-rugedopetejene.pdf
    • http://blingitistreasures.com/uploads/1/3/1/3/131383767/tofajejunob.pdf
    • http://upcyclemom.com/uploads/1/3/1/1/131163976/5143eca07.pdf
    • http://mobilenow.biz/uploads/1/3/1/1/131163910/70b04dc5.pdf
    • http://crossettcitypool.com/uploads/1/3/1/0/131070572/5985937.pdf
    • http://cookiesbycarina.com/uploads/1/3/0/5/130550729/damasifekipu.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005668.bin
f9df5ef74bbbe0e11f7da4a7601005512d823b7bed7224cd3d336038e9ce59fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5668 7756 bytes

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