Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5bf3d56464b3ebc…

MALICIOUS

PDF

38.2 KB Authoring application: Nitro PDF
MD5: 4994ba266bcc8bdeefbe9805f5abe170 SHA-1: 3350904424463bdb7a64703af7dd0afd698ea485 SHA-256: a5bf3d56464b3ebc368503c7e26420f065a50446114bc05c9ae29fbaaf82dee2
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to other PDF files hosted on various domains, suggesting a link farm or a phishing campaign. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious intent, likely related to phishing or traffic redirection.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://naturalworld.club/uploads/1/3/0/4/130476346/vulopab-kabepukolefewa.pdf
    • http://hostmaster.summersongmusiccamp.com/uploads/1/3/0/5/130551720/70092820.pdf
    • http://toolfight.com/uploads/1/3/0/3/130379299/kizavopodu.pdf
    • http://abraxastattoo.com/uploads/1/3/0/7/130776371/5938973.pdf
    • http://crunchybites.net/uploads/1/3/0/5/130540063/jumiludadalevi-fifiwosutozux.pdf
    • http://nextreview.com/uploads/1/3/0/4/130491001/997477.pdf
    • http://untdnatives.com/uploads/1/3/0/6/130639418/zabibafixunidutuloxo.pdf
    • http://skydipphoto.com/uploads/1/3/0/8/130874514/6194784.pdf
    • http://celebritydiethealth.com/uploads/1/3/0/6/130605452/nuwumum_kigixofuburuzop.pdf
    • http://synergyhairandbeautyelloughton.co.uk/uploads/1/3/0/5/130540926/449895.pdf
    • http://amobilemeatmart.com/uploads/1/3/0/6/130604250/wutunurex-fupamatoj-jaruvitugozefe-lowazulepitukuv.pdf
    • http://adventureswithrocks.com/uploads/1/3/0/5/130589420/669d6d.pdf
    • http://amiguru-me.com/uploads/1/3/0/2/130274282/xidotegawa.pdf
    • http://520northllc.com/uploads/1/3/0/4/130436261/522014.pdf
    • http://ryanbinford.com/uploads/1/3/0/5/130539338/gumoxazopezu.pdf
    • http://www.wholebirthnw.com/uploads/1/3/0/5/130550785/lebaxufusawasu.pdf
    • http://publicnou.com/uploads/1/3/0/3/130323453/9597011.pdf
    • http://myruthie.com/uploads/1/3/0/7/130740624/riwegopugax.pdf
    • http://v0wm9.salon225.com/uploads/1/3/0/5/130551349/130551349.html#scalp+psoriasis+medicine+in+ayurveda
    • http://skydipphoto.com/uploads/1/3/0/8/130874514/6194784

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000037e6.bin
4492f9acd5225192f46cef1d8fc09002d8fe0e1241045190987c79b397e88500
pdf-font-stream PDF embedded font (sfnt) at offset 0x37E6 7836 bytes