Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbd44193a6bb4101…

MALICIOUS

PDF

38.7 KB Created: 2020-04-25 06:32:15 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 01c2eb97deb5ee605a721ce08085f7af SHA-1: 74192545f2d5ca7c40625b838810de2e073be67e SHA-256: dbd44193a6bb41015e86d0b39f7a12b11e6316b5043f62e12e6a9a431d19b3d5
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique commonly used for SEO spam or to redirect users to malicious websites. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, indicating a likely attempt to manipulate search engine results or distribute malware. The embedded URLs point to various domains, suggesting a broad distribution effort. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://costaricamillionaireproperties.com/uploads/1/3/1/1/131164269/131164269.html#5+canciones+faciles+para+guitarra+pdf
    • http://gourmet2day.net/uploads/1/3/0/7/130738578/zawuxikewubugakajake.pdf
    • http://milonovitzphotography.net/uploads/1/3/1/6/131607096/2231936.pdf
    • http://muziekkapel.be/uploads/1/3/0/7/130775033/resedejaj-degiwisolixetud-vedire.pdf
    • http://tresmaderas.net/uploads/1/3/1/4/131454733/40bc1320e.pdf
    • http://pyrosteria.com/uploads/1/3/0/6/130604002/tififaxaxujijus-dekizaz-sadujimin-gapoguxosewuja.pdf
    • http://maestro4u.com/uploads/1/3/0/2/130288762/jidujobatonasubuno.pdf
    • http://asmentoring.com/uploads/1/3/0/5/130551141/lukiwofonoxosipa.pdf
    • http://noblecountylibrary.org/uploads/1/3/0/5/130589240/1830823.pdf
    • http://shermansmallengines.com/uploads/1/3/0/2/130288643/pugekij.pdf
    • http://artshotz.com/uploads/1/3/0/7/130739254/fukitolidife.pdf
    • http://lumiereweddingphotography.com/uploads/1/3/0/2/130270808/vitarivikimusefobigo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a1c.bin
92cec6d437be3894583fb28a9f94af72a71fb76ef5337d0dfdd2405361c9961d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1C 8736 bytes
font_01_sfnt_off00007a3a.bin
83d89f79375f7f339e88070a8779324ce221c94923bff415e388e162fbc46cfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3A 2604 bytes
font_02_sfnt_off00008369.bin
f6ff990806f26ec4d5220c5b9e741bb8f8491bf1c4c27d0b49698a1db55c46b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8369 1796 bytes

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