Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec4d868a068d5769…

MALICIOUS

PDF

35.1 KB Authoring application: PDFBox
MD5: 0059260473b9b24460b2cca5f199ad5a SHA-1: 2309fcbb59661d8f2f2c0b44d35e3022e78c1e6f SHA-256: ec4d868a068d5769e3bed7e29571b817ab841e243f1f3f494b2754d593822d6f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to other PDF files hosted on various domains. This suggests a link farm or redirection mechanism designed to lead users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, classifying it as phishing-related malware.

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://hiyeller.com/uploads/1/3/0/7/130739103/8418671.pdf
    • http://mspistone.com/uploads/1/3/0/8/130813111/7125084.pdf
    • http://www.breakgroundkidscode.com/uploads/1/3/0/6/130604501/pididosazun_sulamavu_mirojeva_bizumidafa.pdf
    • http://crimsonshadowpack.com/uploads/1/3/0/6/130639549/b785e0e.pdf
    • http://terminal3.net/uploads/1/3/0/5/130590361/bunojeradegadegumixo.pdf
    • http://coachellascreenprinting.com/uploads/1/3/0/7/130776223/kajazimox.pdf
    • http://saratogainst.org/uploads/1/3/0/6/130620436/5717615.pdf
    • http://www.kinderortelfenweg.ch/uploads/1/3/0/2/130289649/58dd153944a9.pdf
    • http://ilovefatjacks.com/uploads/1/3/0/4/130483581/6389654.pdf
    • http://hotelsthepas.net/uploads/1/3/0/7/130740318/vegozoxiteju.pdf
    • http://baselandspice.com/uploads/1/3/0/4/130491166/4407820.pdf
    • http://koffienator.nl/uploads/1/3/0/5/130540159/kaburirijuka_rejazetifija.pdf
    • http://mutantschooldropout.com/uploads/1/3/0/3/130323517/runotigawisetu_xaselaji.pdf
    • http://nxlevelphysicaltherapy.com/uploads/1/3/0/5/130588467/8571199.pdf
    • http://sv-officefurniture.com/uploads/1/3/0/2/130289304/deniburu.pdf
    • http://a1817133xstreamtravel.xsideas.com/uploads/1/3/0/2/130289222/130289222.html#convert+scan+document+to+excel+online
    • http://ilovefatjacks.com/uploads/1/3/0/4/13048358

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ee4.bin
96d640477b1d866ff46b09b951460c501cc69dbb871ce563a15187b27255a66c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE4 7608 bytes

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