Malicious PDF — malware analysis report

Static analysis result for SHA-256 48fba1041d034e0b…

MALICIOUS

PDF

42.0 KB Authoring application: PDFBox
MD5: f83e2b228974673b6ed7a6642d066a3a SHA-1: 33065a0e6fa96310216939b755efc15e0dfa273a SHA-256: 48fba1041d034e0b13896dc0a603d5c7a3a76c78d9d2dfe89260a2abcec52e12
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding a large number of external URLs that point to other PDF files. This technique is often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier further support its malicious nature, flagging it as Pdf.Phishing.TtraffRobotInstall.

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://centerforpilates.com/uploads/1/3/0/7/130740561/1381619.pdf
    • http://jamesorourkelaw.com/uploads/1/3/0/6/130603772/c01e6a2c31.pdf
    • http://openmindsholistichealingcenter.com/uploads/1/3/0/6/130621369/rumoki.pdf
    • http://lifebadger.net/uploads/1/3/0/5/130589156/5667983.pdf
    • http://montessori-lomas.com/uploads/1/3/0/4/130435646/bacbac43d560.pdf
    • http://moviestvsports.com/uploads/1/3/0/7/130775929/24b04bd.pdf
    • http://camco-stores.com/uploads/1/3/0/7/130775522/belira.pdf
    • http://sbprocast.net/uploads/1/3/0/2/130270740/nofogidimolekan.pdf
    • http://drchristophersmith.net/uploads/1/3/0/6/130605373/podokilefe.pdf
    • http://honeycombjs.com/uploads/1/3/0/2/130292073/zumenifudafa.pdf
    • http://perumarket.net/uploads/1/3/0/6/130639267/5180671.pdf
    • http://performx.shop/uploads/1/3/0/6/130621912/siluger_gijeledowis_lesapumefodig.pdf
    • http://eng-kayla-j.pleasingfood.com/uploads/1/3/0/6/130620576/130620576.html#toefl+speaking+test+tips
    • http://montessori-lomas.com/u

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003fc2.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3FC2 2652 bytes
font_01_sfnt_off00004bd3.bin
63522597b7618c1704dc8177e2677f07f300a2ccd3e46a4aeb515ada6359e1dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BD3 8216 bytes

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