Malicious PDF — malware analysis report

Static analysis result for SHA-256 f284e9aadbce6ce7…

MALICIOUS

PDF

30.9 KB Created: 2020-04-10 14:21:55 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e3b36006d566975c07da1a251c3f7d9c SHA-1: 5116b65a23bf860aee4565e62d2fc8c57c21a3cc SHA-256: f284e9aadbce6ce716292777a42705300062857c386a94af9d9524ed2e0d2c13
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a redirection scheme, likely intended to drive traffic or distribute further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://removewrel.com/uploads/1/3/0/9/130969504/130969504.html#sonic+cd+cutscenes
    • http://everythinginsight.net/uploads/1/3/0/2/130271116/jitolatevew_furepomaruru_nitivulukufupi_sogowirog.pdf
    • http://stephanieseeney.com/uploads/1/3/0/2/130292089/dikowizexip.pdf
    • http://therqamgt.com/uploads/1/3/1/3/131380212/vagogujopanowemoj.pdf
    • http://cristinabheart.com/uploads/1/3/0/5/130539231/7688713.pdf
    • http://wirelessaccountant.ca/uploads/1/3/0/9/130969536/4323793.pdf
    • http://officialwashgo.com/uploads/1/3/0/6/130621675/6573821.pdf
    • http://carnewhandypro.com/uploads/1/3/0/7/130776718/digitajomi-pajelegisojaxuv-ruzelasugi.pdf
    • http://janephilipsceramicsshop.com/uploads/1/3/0/6/130605253/numonaxilufafi-davuwimuxetafi-kekegakovepumi-nejedi.pdf
    • http://leucadia-real-estate.com/uploads/1/3/0/4/130476786/27c1d.pdf
    • http://modernmediaservices.com/uploads/1/3/0/5/130547924/6880934.pdf
    • http://mainstreamreviews.com/uploads/1/3/0/6/130604940/faweditafub_dozapibawa.pdf
    • http://myrfinn.com/uploads/1/3/0/7/130740080/82bd5e8eb.pdf
    • http://londonphantomhire.com/uploads/1/3/0/4/130489803/dojuvaxiwapot.pdf
    • http://earnlinks.net/uploads/1/3/0/8/130813516/a8466.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_off0000522c.bin
42201b6fd87757a231d08dad8a94ea3a5d9a82b8c2a18189198d4395fccc7ad4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x522C 7216 bytes

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