Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cea131891a17fa5…

MALICIOUS

PDF

31.3 KB Authoring application: Scribus
MD5: c8fe58371e4777f19a41f178f891bf99 SHA-1: e6fb8bc9f10c871cd6ee4fac5b8c65e2c5356761 SHA-256: 4cea131891a17fa5dddcfce38ff2dcb5234d2b72c41393336747e659335cec61
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO poisoning or to distribute malware. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The embedded URLs are likely part of a campaign to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://interviewstogogo.com/uploads/1/3/0/6/130620353/favavirak-vafivemo-zojijogu-rewapizipa.pdf
    • http://zuiderhavendijkconcert.com/uploads/1/3/0/5/130539818/9e02697049.pdf
    • http://mnproperties-id.com/uploads/1/3/0/2/130272470/finupuwitovadevonona.pdf
    • http://lotusmediaprint.com/uploads/1/3/0/7/130738727/guzoxudeb.pdf
    • http://bluetorchfinance.com/uploads/1/3/0/7/130740477/e1c76d471.pdf
    • http://sellingonline.today/uploads/1/3/0/4/130489082/mutogutavijewasinizo.pdf
    • http://youngmenofrespect.org/uploads/1/3/0/7/130740297/zosid.pdf
    • http://criminalattorneysaltlake.com/uploads/1/3/0/5/130551248/cb83115184cef4.pdf
    • http://thoughtjotsmemobooks.com/uploads/1/3/0/6/130639298/fonafofonelaxolir.pdf
    • http://chaletalpemassif.com/uploads/1/3/0/8/130813732/divojotakuwer-rojotuxe-lomobapovol.pdf
    • http://themanymes.com/uploads/1/3/0/5/130550704/nesogizoka-bunomimofuz-nufunevotedadu.pdf
    • http://bgooddesignllc.com/uploads/1/3/0/7/130740427/9c7569a2928ab.pdf
    • http://mgit0.slpny.com/uploads/1/3/0/4/130476853/130476853.html#anaerobic+digestion+wastewater+treatment+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000024c7.bin
31060a33e3beb23792d78db59c8d6be3d94039bc046b72cc9cc5753a6f86907d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C7 6848 bytes

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