Malicious PDF — malware analysis report

Static analysis result for SHA-256 25ba331d1d33f713…

MALICIOUS

PDF

32.3 KB Authoring application: Karbon
MD5: a4187cccd0a4cf51a7911ad6e7545fe4 SHA-1: a2e6b2ec65bded00e8af214a2907b1833004086b SHA-256: 25ba331d1d33f71317ab9383f88a06bb47d9dc8a44a7fe986580bef9a78dc33a
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links to other PDF documents. This technique is often used to obscure the ultimate destination and potentially distribute phishing content or malware. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing or traffic redirection scheme.

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://thesimplelifeventures.com/uploads/1/3/0/7/130775056/dudavoj.pdf
    • http://oxbowfarmny.com/uploads/1/3/0/5/130544063/4873023.pdf
    • http://edwardbarkershoes.com/uploads/1/3/0/8/130874038/9a032c1.pdf
    • http://mdcprint.net/uploads/1/3/0/6/130620660/04adacdbe5f559.pdf
    • http://laextraordinaire.com/uploads/1/3/0/2/130270937/fosisenufokusozivozu.pdf
    • http://celebrationandpartysupplies.com/uploads/1/3/0/4/130435939/gidozojije_nadorosoliga_givukero_guruwipigavodad.pdf
    • http://presidiowebdesign.com/uploads/1/3/0/2/130287313/6225fa2.pdf
    • http://thinkglobaly.com/uploads/1/3/0/4/130489423/vamezore-gasusike.pdf
    • http://www.travelandthrift.com/uploads/1/3/0/6/130604165/879c3b3fb85c.pdf
    • http://msluxecosmetics.com/uploads/1/3/0/6/130604091/4477317.pdf
    • http://newenglandcanna.com/uploads/1/3/0/5/130551697/nutuvutofu_godosidare_noxatefibomuxu.pdf
    • http://crowdrisediy.com/uploads/1/3/0/5/130539204/vupotetur-bunalasomoxu.pdf
    • http://2creeks.biz/uploads/1/3/0/8/130874332/4eeae8d.pdf
    • http://chapelhill.plus/uploads/1/3/0/6/130603861/0d7f1839812b3ce.pdf
    • http://mastergamecraft.com/uploads/1/3/0/2/130273733/sopugizuvujowo_xubakakera_gemulera_kijodirureb.pdf
    • http://barricas.nl/uploads/1/3/0/6/130603814/mofevarekoni.pdf
    • http://alexbrightphotography.com/uploads/1/3/0/3/130323709/6fe868a85193.pdf
    • http://isfnrconf.org/uploads/1/3/0/5/130545818/voletotijanudurapu.pdf
    • http://picturemachines.com/uploads/1/3/0/7/130740183/xuvedex.pdf
    • http://bjpropertyventures.com/uploads/1/3/0/2/130289641/352258af8eff.pdf
    • http://libertycharleston.gammaxiques.org/uploads/1/3/0/9/130969311/130969311.html#rust+oleum+american+accents+2x+ultra+cover

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001df9.bin
3ced67d69b605d0147525521aeb3d35896c6f35b254c8fe5c59df1694f722efc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1DF9 7840 bytes

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