Malicious PDF — malware analysis report

Static analysis result for SHA-256 09c6e7fc377a5703…

MALICIOUS

PDF

51.1 KB Created: 2020-03-24 04:32:24 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3826ff3c44ecaeea49e71aad814ce6b5 SHA-1: 2549c88f0bc4a7b669b10696d75ba2407415e477 SHA-256: 09c6e7fc377a57036235d7db3f28956d14e9300e648e21ed67a9982b5d31f652
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary purpose appears to be directing users to a variety of websites, potentially for SEO manipulation or to host further malicious content. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis of intent beyond link distribution.

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://devinedesignsllc.net/uploads/1/3/0/7/130775791/130775791.html#whirlpool+70+pint+dehumidifier+wdh70eapw+review
    • http://waldorfworldwide.org/uploads/1/3/0/6/130604582/5566894.pdf
    • http://www.sweetqueenbakingcompany.com/uploads/1/3/0/3/130323208/9726439.pdf
    • http://www.agioresidence.com/uploads/1/3/0/3/130313056/5974832.pdf
    • http://www.michaelvincentcoaching.com/uploads/1/3/1/0/131070030/553792.pdf
    • http://raplawnc.com/uploads/1/3/0/2/130272892/9578365.pdf
    • http://www.gardenharvestparty.com/uploads/1/3/0/2/130289429/6608875.pdf
    • http://algebra2.net/uploads/1/3/0/8/130874668/jexirafolotifeb_birajefizeduxi_moloretebegiw.pdf
    • http://www.weekendbriefs.com/uploads/1/3/0/7/130739082/8990859.pdf
    • http://normacowie.ca/uploads/1/3/0/5/130551405/biwikawuwi-fazamufeke-kajixaw.pdf
    • http://april-white.com/uploads/1/3/0/3/130324351/50613.pdf
    • http://akasha.co.uk/uploads/1/3/0/3/130323106/zoworedivumudonokuxe.pdf
    • http://bobbykphotography.com/uploads/1/3/0/9/130969311/junokimuw_nakefolotolavis_pezesi.pdf
    • http://prajnasplace.com/uploads/1/3/0/4/130483396/papedijed-nifupadubad.pdf
    • http://theconnectgoddess.com/uploads/1/3/0/5/130551823/8528608.pdf
    • http://www.antongiuliomazzola.com/uploads/1/3/0/3/130313299/e4e48522bc.pdf
    • http://soul-birthing.com/uploads/1/3/0/6/130604548/kafuforibule.pdf
    • http://coloradosawandtool.net/uploads/1/3/0/5/130540097/8559806.pdf
    • http://lawnmedicusa.com/uploads/1/3/0/6/130603979/dedapaxuforija_vobigo_xelasefokak.pdf
    • http://rtbartist.com/uploads/1/3/0/8/130814342/mobupagupasi.pdf
    • http://lizziethomson.com/uploads/1/3/0/6/130639613/8329411.pdf
    • http://dailyjones.org/uploads/1/3/0/9/130968993/38e05c6.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_off00009c01.bin
2d1597b5a8faf415e4821adde315ca632ecbc54cacae4e5d29b6bbe6aa8fc8a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C01 8536 bytes

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