Malicious PDF — malware analysis report

Static analysis result for SHA-256 56d64748527c6876…

MALICIOUS

PDF

31.2 KB Authoring application: GIMP
MD5: a87307b722d3c102a27d3f4adb4e6622 SHA-1: 3c52f3bd06213d4d2c7247d00db668f818a30c49 SHA-256: 56d64748527c687680267fcc00be58ad842e7cbd3f29b184937015a56ce97784
150 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files on different domains. This is indicative of a link farm used to distribute malicious content or conduct phishing. The ML_NYX_PDF_MALICIOUS and ClamAV detections further support the malicious nature of the file. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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://notaorg.ru/uploads/2020/01/28/guweb-bivejol.pdf
    • http://apran.icu/uploads/2020/01/27/4192112.pdf
    • http://datingnearme.in/uploads/2020/01/28/4697226.pdf
    • http://clspropertymaintenance.com/uploads/1/3/0/6/130603895/jomemo_begizi_resuvo.pdf
    • http://war.assinaturareativacaoeletronica.com/uploads/2020/01/27/vijorinur.pdf
    • https://wetogituvuzole.weebly.com/uploads/1/3/0/4/130483766/vatilemobula.pdf
    • http://vejimera.ethcryptobank.biz/uploads/2020/01/28/c91978.pdf
    • https://rulifogemunoxut.weebly.com/uploads/1/3/0/6/130604907/3611447.pdf
    • http://mexuke.magiksdur.pw/uploads/2020/01/29/zajus.pdf
    • http://fizono.ceodentvicalvaro.com/uploads/2020/01/28/vepin_bevowufavafekut_radutixotori_ruzorama.pdf
    • http://rukasokod.photorobots.ru/uploads/2020/01/27/vofapogudamevod-wugobusisuv-saxuzomuxigikar.pdf
    • http://fuvoful.pmk-metall.ru/uploads/2020/01/28/kufobex.pdf
    • http://phillyquartermaster.com/uploads/1/3/0/4/130478360/rapevigisenokofibalu.pdf
    • https://bimixixuno.weebly.com/uploads/1/3/0/5/130551226/6974981.pdf
    • http://emprendedoradollyadoraim.com/uploads/2020/01/29/raridu_gusebalinirixa.pdf
    • http://autocivilka.site/uploads/2020/01/29/mabipamun.pdf
    • http://mycreativecontributions.com/uploads/1/3/0/4/130476141/jiwak_lijujak_xugov.pdf
    • http://theleawoodfamilydentist.com/uploads/1/3/0/4/130489969/130489969.html#local+weather+report+near+me

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001499.bin
ea308a17a6b1be4f395cb82c7b18617e32f0d964edde449060426ff1664219e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1499 7296 bytes

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