Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b0bbb47197181fa…

MALICIOUS

PDF

42.4 KB Authoring application: SWFTools
MD5: b2b2da00f78fec0a0fada7e335829e74 SHA-1: 7b204646045cb8340a477a021d64af2af2c33c55 SHA-256: 1b0bbb47197181faff95ad60fa89c16cb143e983fc03f6e0f671ce4984c084de
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to other PDF files, a technique commonly used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though truncated, mentions 'reading comprehension' and 'questions and answers', suggesting a lure to disguise the malicious link farm.

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://animamed.com/uploads/1/3/0/5/130543663/7335016.pdf
    • http://kimbery-barrett.com/uploads/1/3/0/7/130776754/vibita.pdf
    • http://emilysapp.com/uploads/1/3/0/5/130541662/rexonopu.pdf
    • http://wallawallatreecare.com/uploads/1/3/0/6/130604523/najaze-kekovi-wutagasub.pdf
    • http://www.trycondenser.com/uploads/1/3/0/7/130738911/5909271.pdf
    • http://mustangremediation.com/uploads/1/3/0/2/130291649/xikemawi-nimadalo-mafasesotolel.pdf
    • http://3170gordondrive.com/uploads/1/3/0/3/130323674/jixuruwope.pdf
    • http://pinewoodcabins.com/uploads/1/3/0/7/130739987/ganatumafavo.pdf
    • http://newhavenbooksellers.com/uploads/1/3/0/6/130621805/6ac12c188e9efbb.pdf
    • http://spencerbarnor.com/uploads/1/3/0/6/130639411/zibabelaka.pdf
    • http://aurasalontn.com/uploads/1/3/0/5/130539497/pisodaji.pdf
    • http://thequipcrew.com/uploads/1/3/0/6/130639115/4671949.pdf
    • http://exotictreehouse.com/uploads/1/3/0/7/130738569/kataxokata.pdf
    • http://culezona.eu/uploads/1/3/0/2/130270971/lajapu.pdf
    • http://mixedsf.com/uploads/1/3/0/6/130639802/4777058.pdf
    • http://choosingus.co/uploads/1/3/0/5/130543166/jobinesezarim_ponexeju_xazezapu.pdf
    • http://neurorehabkent.com/uploads/1/3/0/2/130287394/c17afe3bf5a25f0.pdf
    • http://www.alfredjacoboinc.alfredschipsandsalsaexpress.com/uploads/1/3/0/8/130813782/6477343.pdf
    • http://jvq1f.slpny.com/uploads/1/3/0/5/130540134/130540134.html#short+reading+comprehension+for+grade+9+with+questions+and+answers+pdf
    • http://emilysapp.c

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004860.bin
70bc81abae9d57830d36e6c84bb5eed49012f139e53522c7a74aaa8c3e90da44
pdf-font-stream PDF embedded font (sfnt) at offset 0x4860 8000 bytes