Malicious PDF — malware analysis report

Static analysis result for SHA-256 352185bf2f5ef645…

MALICIOUS

PDF

38.6 KB Created: 2020-03-08 05:15:07 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a441e35c68ac773bd7038c8d3002378f SHA-1: f720f6c94229fb984bb66d92c9310e01c20dc5f0 SHA-256: 352185bf2f5ef645b2b92242a7eeb6beedabfb839fd6518eaade8ecdcbb3628c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

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 distribution mechanism. The ML_NYX_PDF_MALICIOUS heuristic also strongly indicates malicious intent. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery or execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://open-doorcounselingcenter.com/uploads/1/3/0/3/130313854/130313854.html#dappu+srinu+bhajana+patalu+telugu
    • http://grubit.co.uk/uploads/1/3/0/7/130775145/lijasegejamivumere.pdf
    • http://accyp.com/uploads/1/3/0/2/130272101/4694288.pdf
    • http://www.speakarts.com/uploads/1/3/0/5/130543995/632d45b059.pdf
    • http://jeffreybrooksclarinet.com/uploads/1/3/0/6/130639343/susizi.pdf
    • http://optindeals.online/uploads/1/3/0/3/130313141/lenulurog_bosipigojurov_kugerojet_wedoni.pdf
    • http://471633614246918175.com/uploads/1/3/0/6/130605269/8690492.pdf
    • http://embellishmepattyv.net/uploads/1/3/0/5/130550696/4749168.pdf
    • http://texasfinesse.com/uploads/1/3/0/4/130488100/6144716.pdf
    • http://triplethreathooprecruits.com/uploads/1/3/0/7/130740571/1210873.pdf
    • http://phoenixchildrensevents.com/uploads/1/3/0/2/130272905/fokeduju_sodulojovi_naxupeluxa_nusawaf.pdf
    • http://www.atlantapermaculture.com/uploads/1/3/0/5/130547207/jotorajaverijex_buvetumovel_kusarajaxuboji.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_off00006dac.bin
ae33fdc6e68229f4cfa277963034eaec47e343b9cb599330e16a278e0409ab25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAC 8172 bytes

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