Malicious PDF — malware analysis report

Static analysis result for SHA-256 94407f7557318023…

MALICIOUS

PDF

38.4 KB Authoring application: Karbon
MD5: f069286463db7aa84f3f5772e2bc4259 SHA-1: ce74d2d714468a0e2dd3167ff6fcabce624a72cf SHA-256: 94407f7557318023ee334e797e508854062be50326f22f415961ecc98e164099
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV also flagged this file as malicious, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs suggest a phishing or SEO manipulation campaign, aiming to redirect users to potentially malicious content hosted on various domains. No scripts were extracted from this sample.

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.
  • 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://tumi.danielfache.com/uploads/2020/01/27/vulogiguwu.pdf
    • http://vowonos.pcigra.ru/uploads/2020/01/28/b312dc84b2fe8.pdf
    • http://soybeanessentials.com/uploads/1/3/0/4/130489572/bekase_falilibebepob_gowiludozu_didogegiluvuk.pdf
    • http://thetwigwarehouse.com/uploads/1/3/0/5/130539305/febelimani_pazaxezawowaki_rotowofi.pdf
    • http://alvarezorganics.com/uploads/1/3/0/6/130604098/1803326.pdf
    • http://flowers-sale.ru/uploads/2020/01/28/notemumore.pdf
    • http://northwestclubracer.com/uploads/1/3/0/3/130313152/705e4d1fe3acb.pdf
    • http://offthegrid24.com/uploads/1/3/0/3/130312964/puguxotorom.pdf
    • https://kakitokizever.weebly.com/uploads/1/3/0/5/130543684/80b81381cec2a.pdf
    • http://vermatesa.com/uploads/1/3/0/4/130436095/6cb5288bf7b.pdf
    • http://missstephaniesartclass.weebly.com/uploads/1/3/0/6/130605152/4b1018c8e279c20.pdf
    • http://norshus.com/uploads/1/3/0/6/130620240/130620240.html#how+to+upgrade+blackberry+q10+to+android

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001359.bin
e60672fe362b6f70857bfc420265c8568010d05495022660161fc76106e9b0b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1359 8812 bytes

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