Malicious PDF — malware analysis report

Static analysis result for SHA-256 befe22dda74cd5c7…

MALICIOUS

PDF

93.3 KB Created: 2020-06-07 16:07:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54d57df443f89f63b76cd8c7181b94b8 SHA-1: 3dfe30db67dec7e67117667db57c7824705e5643 SHA-256: befe22dda74cd5c7b6a9a5b97f13a0952f442a8f879119869e4d1fa599307b37
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, including http://2ja.undesirable.us/ and http://homeyork.com/, suggesting a tactic to drive traffic to potentially malicious content or to distribute further payloads. The presence of these numerous links is the primary indicator of malicious intent.

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://2ja.undesirable.us/uploads/1/3/1/8/131871687/131871687.html#%25D8%25A3%25D9%2586%25D8%25A7+%25D9%2585%25D8%25B9%25D8%25AC%25D8%25A8+%25D8%25A8%25D9%2588%25D8%25A7%25D9%2584%25D8%25AF%25D9%258A
    • http://homeyork.com/uploads/1/3/1/0/131070302/bejofejiteb.pdf
    • http://trozudos.com/uploads/1/3/0/5/130588389/7400143.pdf
    • http://personalcities.com/uploads/1/3/1/4/131483772/mozowogop.pdf
    • http://tapleydesigns.com/uploads/1/3/0/8/130874296/8c577.pdf
    • https://degigox.files.wordpress.com/2020/06/rotuxizopixufexiwa.pdf
    • https://raropare897422586.files.wordpress.com/2020/06/vuxola.pdf
    • https://suvirowom.files.wordpress.com/2020/06/55967485661.pdf
    • https://nojisaxopo.files.wordpress.com/2020/06/wigiju.pdf
    • https://tobodinu.files.wordpress.com/2020/06/kujanobevozibepa.pdf
    • https://weberex.files.wordpress.com/2020/06/31722719160.pdf
    • https://ranojogirufe.files.wordpress.com/2020/06/kotufuge.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
stream_002_off000110e8.bin
1c82f1295f6b043320d9e56f34bfd0949dbf6cce848183b6dc2fd784bec54ce5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x110E8 33300 bytes
font_01_sfnt_off000149d6.bin
3eade51a22513ce7d155ca7e632fa4c758a0aa01c3dc246e501f4680842e6b93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x149D6 8828 bytes

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