Malicious PDF — malware analysis report

Static analysis result for SHA-256 edd94d39216df647…

MALICIOUS

PDF

56.0 KB Created: 2020-03-12 10:08:06 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 17e41e403d36050b7613d07e1bb72dce SHA-1: e589ddb11363388b1906ec9b3d5ce544cfeb363e SHA-256: edd94d39216df6472cef978713e7647e69823cac55e65d900260c41dc285c5f3
94 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information T1204 User Execution

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body is heavily obfuscated but contains references to the URLs. The primary attack pattern appears to be SEO manipulation or a link farm designed to direct users to potentially malicious content hosted on numerous domains. No scripts were extracted from this sample.

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://sales12-sip-phone.pleasingfood.com/uploads/1/3/0/6/130604188/130604188.html#gui+java+programs+examples+pdf
    • http://bandbscore.com/uploads/1/3/0/7/130739853/5d76f6170a0a56.pdf
    • http://albertasounddesign.com/uploads/1/3/0/6/130620791/motudowofifulijiriga.pdf
    • http://myjourneyracing.com/uploads/1/3/0/7/130739535/5255006.pdf
    • http://www.rashbiprayers.com/uploads/1/3/0/5/130545098/5dfc6c879d.pdf
    • http://maryroselaw.com/uploads/1/3/0/5/130590665/105d46ea7eb.pdf
    • http://scottcookauthor.com/uploads/1/3/0/6/130639024/jufegizoma-rifizumimina.pdf
    • http://moongy.net/uploads/1/3/0/2/130274343/xanonokezixo-vakirurofij.pdf
    • http://fairevent.nl/uploads/1/3/0/2/130288392/kigisu.pdf
    • http://mycb113.com/uploads/1/3/0/7/130739833/8959660.pdf
    • http://mcacashflows.com/uploads/1/3/0/5/130589297/2320756.pdf
    • http://climatechange.mobi/uploads/1/3/0/7/130739780/ruvom.pdf
    • http://ctirsolucoes.com/uploads/1/3/0/6/130603852/88930e08675.pdf
    • http://kobomvelik.alta.si/uploads/1/3/0/4/130436033/4b41117b07176.pdf
    • http://chalkfuldesigns.com/uploads/1/3/0/9/130969077/pasumorexapu.pdf
    • http://www.asperadesigns.com/uploads/1/3/0/5/130539432/zukup.pdf
    • http://simplyexquisitehg.com/uploads/1/3/0/6/130604728/d6ccd1.pdf
    • http://thedroneinvasion.com/uploads/1/3/0/2/130289284/4829346.pdf
    • http://www.reneseptic.com/uploads/1/3/0/6/130605506/9072c8.pdf
    • http://publicationorganizer.com/uploads/1/3/0/5/130540037/31de250799a6e.pdf
    • http://hatterasarchives.com/uploads/1/3/0/6/130620971/e26e99.pdf
    • http://tiarealestatesolutions.com/uploads/1/3/0/6/130621182/bdf58.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_off0000afc3.bin
fed0c5340973bdff14b8183eebb1c87597357db1ab80ebfd674793eceb3cc915		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFC3 8836 bytes

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