Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac06043d91f458d2…

MALICIOUS

PDF

40.7 KB Created: 2020-03-21 14:51:47 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a4f285aa1f006a8d077c0d7a7a97104a SHA-1: c04e207788c1051be127444ee233f2702ee5495b SHA-256: ac06043d91f458d2fab381cc108a891070977f694fc5eb75008d266c152ca20f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of external links, many of which point to other PDFs on SEO-optimized domains. This behavior is characteristic of a link farm designed to redirect users to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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://woodlandstuition.com/uploads/1/3/0/4/130490399/130490399.html#modelo+de+demanda+de+nulidad+de+acto+juridico+de+escritura+publica
    • http://musicflowmedia.net/uploads/1/3/0/4/130436074/fizejuzinovu.pdf
    • http://cancofiresprinkler.net/uploads/1/3/1/1/131163578/8255d81.pdf
    • http://triplea-solutions.com/uploads/1/3/0/7/130776254/bapebitagutokuv.pdf
    • http://transcendtext.com/uploads/1/3/0/7/130738805/7739444.pdf
    • http://masterofthehouse.net/uploads/1/3/0/4/130488590/kurozi_xaxetiv.pdf
    • http://www.paradisepropertiestn.com/uploads/1/3/0/4/130483808/lagisa.pdf
    • http://patchincompany.com/uploads/1/3/0/7/130775364/wemutateri_nineped_wifokadizodu_vamuzij.pdf
    • http://undertheparadisebridge.com/uploads/1/3/0/3/130379492/4323444254070d1.pdf
    • http://www.findthatpartyplanau.net/uploads/1/3/0/4/130488345/xujekes_miwasovonagelom_semupizapane_dujodimujubov.pdf
    • http://canaryfilms.org/uploads/1/3/0/2/130288523/4117854.pdf
    • http://mail.napiercounselling.co.uk/uploads/1/3/0/7/130740127/kijonoj_nosuj_lezoxitepuxa.pdf
    • http://littlerocktreeservices.com/uploads/1/3/0/4/130490386/sowulukobupabe_lasimadusesinax_bidofomonusipog.pdf
    • http://bodysculptingnewimagespa.com/uploads/1/3/0/4/130435938/xelumo.pdf
    • http://areshfraser.com/uploads/1/3/0/6/130621547/remujiwigijapa.pdf
    • http://wellfleetpirate.com/uploads/1/3/0/4/130435722/zusano_zuludag_xerigudumigawo_jitakumadid.pdf
    • http://cancella.com/uploads/1/3/0/6/130639456/666414.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_off000074b0.bin
4872f1204e8f2597138a0618c920265450d4295ffb2296044ed2341da0c6fd2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x74B0 8416 bytes