Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3bbfd31d79157ee…

MALICIOUS

PDF

41.6 KB Authoring application: LibreOffice
MD5: ecd4b145a0c8095d9fb42324a7a4650a SHA-1: 7101521da46677b56b3d81d1d0c1bf2033a7b5fe SHA-256: f3bbfd31d79157ee0def266b126f0e9fcca33f52dc9b948effb2bf0dea1f8a97
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, indicating a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent. The document body text is heavily corrupted and does not provide clear context, but the heuristic firings are sufficient to assess the attack pattern. No scripts were extracted from this sample.

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://sweetpeamaternity.ca/uploads/1/3/0/6/130604716/gavawilumubupugim.pdf
    • http://janekuooptometry.com/uploads/1/3/0/7/130739444/povixigarikutag.pdf
    • http://utile-it.com/uploads/1/3/0/2/130289166/5474070248f880.pdf
    • http://ns.metropolitancabinetworks.com/uploads/1/3/0/7/130775531/391431.pdf
    • http://advancedpaintpreparation.net.au/uploads/1/3/0/6/130620773/3802072.pdf
    • http://ninjaproxies.org/uploads/1/3/0/2/130289310/6f6a0127.pdf
    • http://cbaptistmurillo.com/uploads/1/3/0/5/130590296/mowimejopiwaw-betudufuzolewok-gomabuparesojak-vafajifemu.pdf
    • http://haydnhite.com/uploads/1/3/0/5/130590164/66e0026.pdf
    • http://firefightersofamerica.com/uploads/1/3/0/6/130621331/pareze.pdf
    • http://le-manuel-du-tage-2.fr/uploads/1/3/0/5/130539810/7709174.pdf
    • http://refreshingoasis.org/uploads/1/3/0/5/130546385/8008996.pdf
    • http://paulguinee.com/uploads/1/3/0/2/130287845/besilo-rurowif.pdf
    • http://isanybodylisteningtome.com/uploads/1/3/0/2/130291649/7153987.pdf
    • http://malachany.net/uploads/1/3/0/4/130488152/9638577.pdf
    • http://www.auticoach-volders.com/uploads/1/3/0/2/130288522/vipiro_jololusoxed_wupadipugiro.pdf
    • http://ww.campidivolontariato.net/uploads/1/3/0/7/130775125/7983869.pdf
    • http://www.guerinasante.com/uploads/1/3/0/8/130873893/6967079.pdf
    • http://kristibowdenphotography.com/uploads/1/3/0/5/130551559/zakipawafaxagozunun.pdf
    • http://beautycareerservices.com/uploads/1/3/0/6/130639642/8d35e573db9456.pdf
    • http://floodresponseteam.com/uploads/1/3/0/7/130776458/vusefonari.pdf
    • http://bindboard.com/uploads/1/3/0/6/130639580/0b46690.pdf
    • http://sprintboot.com/uploads/1/3/0/5/130550789/dca8d.pdf
    • http://vessol.com/uploads/1/3/0/4/130483631/fidofer_zagunejidew_punoboxezifoz_xarud.pdf
    • http://fit4-women.net/uploads/1/3/0/2/130274151/nafobizijizigiwafu.pdf
    • http://www.501rentals.com/uploads/1/3/0/8/130874569/130874569.html#comparing+qualitative+and+quantitative+research+methods

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003f0a.bin
5b8903e4bba5ba379299affbce51d751055b0e86a57a1ea90ff022b329fe7ec1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F0A 7972 bytes

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