Malicious PDF — malware analysis report

Static analysis result for SHA-256 2da191340563d700…

MALICIOUS

PDF

42.1 KB Created: 2020-03-29 07:26:29 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 05ba2552ecda46b55fbd061a386ffa78 SHA-1: 105a148d3e4aacae0b28a3f2d90881969ef53059 SHA-256: 2da191340563d7003e51d8d0c99e46434ea9d271013205fec75b328673675a44
92 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information T1204 Malicious Link

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 SEO manipulation tactic, potentially used to distribute malicious content or to improve search engine rankings for specific keywords. The ML classifier strongly flagged this PDF as malicious, supporting the suspicious nature of the link farm.

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://deceptivelysimple.com/uploads/1/3/0/2/130287302/130287302.html#libro+de+franz+kafka+la+metamorfosis+pdf
    • http://ketoqr.com/uploads/1/3/0/5/130543878/6108b964896.pdf
    • http://heynoe02.com/uploads/1/3/0/5/130540567/232417.pdf
    • http://www.gaulke4assembly.net/uploads/1/3/0/4/130490115/luxor_vazipapiboro_fokezesoz.pdf
    • http://hessweb.net/uploads/1/3/0/7/130776326/d8aa412868.pdf
    • http://africanprofessorjabu.com/uploads/1/3/0/6/130639228/9268862.pdf
    • http://mudanportesmalaga.es/uploads/1/3/0/6/130604307/2960266.pdf
    • http://nyegirlboutique.com/uploads/1/3/0/6/130604045/1220157.pdf
    • http://gloriagoldreich.com/uploads/1/3/0/6/130622000/sejurep.pdf
    • http://nadiagandellithetahealing.com/uploads/1/3/0/7/130738554/1205113.pdf
    • http://beantownscience.com/uploads/1/3/0/5/130588277/zajujif.pdf
    • http://magneticbrandevents.com/uploads/1/3/0/3/130323301/4a79b37c5a111.pdf
    • http://atwliving.online/uploads/1/3/0/4/130476493/sulalidaraju_gatepagi_berodoxedup_logujilup.pdf
    • http://www.jessebjorkmanforassembly.com/uploads/1/3/0/5/130539838/mumap.pdf
    • http://relevitate.com/uploads/1/3/0/6/130620975/c7d8fc35.pdf
    • http://kindkvist.com/uploads/1/3/0/5/130590291/zedufi_pafavowe.pdf
    • http://www.ocmunc.com/uploads/1/3/0/6/130639428/1c7caf154.pdf
    • http://torresbuildingsvcsinc.com/uploads/1/3/0/5/130550890/nijewusemeb_fupet_rogudodawof.pdf
    • http://agmaitsolution.com/uploads/1/3/0/7/130740123/zelub.pdf
    • http://www.cdc-design.co.uk/uploads/1/3/0/7/130738566/valilavi.pdf
    • http://www.art2trees.com/uploads/1/3/0/7/130775932/kufovuzijimixebo.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_off00007692.bin
cb77f76e195b3ebcf3623c4fcbacf25378387fbdc8aa7b60fb7673d2321a0a15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7692 9556 bytes

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