Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdd0c5d9fc9a2170…

MALICIOUS

PDF

46.2 KB Authoring application: Nitro PDF
MD5: 5fa96ab8c07097f6397b2b0ef1e8b494 SHA-1: 425b02125e8a765eae5ce0a3e672fb6230726cd4 SHA-256: bdd0c5d9fc9a217070dde57029c235dcc483e64a5989c8437e85522b63a489dd
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, pointing to external PDF files. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious classification. The document body, though heavily corrupted, contains fragments of URLs that align with the heuristic findings. The primary attack pattern appears to be directing users to a vast collection of external links, likely for phishing or to distribute additional malware.

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 https://pazawewudizil.weebly.com/uploads/1/3/0/2/130272442/vofolet_wegiw_rulitidesadi_kotivofomu.pdf
    • http://chicagostpatsparade.com/uploads/1/3/0/6/130604864/lurevuxovi.pdf
    • http://lakenonalionsband.com/uploads/1/3/0/3/130313263/jijofuwa.pdf
    • http://begi.ivpallet.ru/uploads/2020/01/28/ef59721a7f7.pdf
    • https://maderafidive.weebly.com/uploads/1/3/0/5/130590578/wodigasaw.pdf
    • http://kugano.u-l.tech/uploads/2020/01/28/5847014.pdf
    • http://frisbeegloves.com/uploads/1/3/0/2/130288421/17456a4544f67d.pdf
    • http://wid.aromastyle.biz/uploads/2020/01/27/pagovabapurusid_sidujexovato.pdf
    • https://vujofonevejum.weebly.com/uploads/1/3/0/5/130551245/febb13e7a19.pdf
    • https://vubibodufujur.weebly.com/uploads/1/3/0/4/130436140/2524cfe960c51a6.pdf
    • http://vid-downloader.tech/uploads/2020/01/29/fetufabi.pdf
    • http://negovanar.paypal-support-limitted.com/uploads/2020/01/28/ac73d9a3d6.pdf
    • http://perfectleadengine.com/uploads/1/3/0/4/130435781/50da87b.pdf
    • http://narrowbandinghelp.com/uploads/1/3/0/5/130589121/5902360.pdf
    • http://nalol.begettest14.fun/uploads/2020/01/29/xafemex-naribujofix-gutibizawipu.pdf
    • https://sopasolojix.weebly.com/uploads/1/3/0/2/130289625/37eb1f1d1.pdf
    • http://luvisidemedia.com/uploads/1/3/0/5/130551659/serod.pdf
    • http://florablackettdesigns.com/uploads/1/3/0/6/130604532/e2e0027f.pdf
    • http://kcbevco.com/uploads/1/3/0/2/130272470/130272470.html#periodic+table+of+elements+pdf+worksheet

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000158b.bin
3fa28fff14d3fa83f4d8aaf32fd9c9cf161e9841ee8ced6063edb8348d26ee85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x158B 8252 bytes
font_01_sfnt_off0000796d.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x796D 2616 bytes

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