Malicious PDF — malware analysis report

Static analysis result for SHA-256 266c15dc361141ea…

MALICIOUS

PDF

41.0 KB Authoring application: Karbon
MD5: eb9f138db2362a54868366bea553c173 SHA-1: 4575c7eb3ccc110a8375ad03d2f94cf7ef87ff50 SHA-256: 266c15dc361141ea6955b62f3a9d5a1ae25a0094c3b9962a46b0c616928783b9
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a PDF link farm and ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body contains numerous embedded URLs pointing to PDF files hosted on various domains. This strongly suggests a phishing or malware distribution campaign where the PDF acts as a lure to redirect users to malicious content.

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://sportyogalady.com/uploads/1/3/0/6/130605229/0c49ff.pdf
    • http://tunesol.remont-msk10.icu/uploads/2020/01/28/vawitanoxis_tefuteji.pdf
    • http://sebeg.neupustishans.ru/uploads/2020/01/28/3574917.pdf
    • http://nocturnewoodworks.com/uploads/1/3/0/3/130323493/fofozafolubosorev.pdf
    • http://comtec.ch/uploads/1/3/0/4/130435646/saravetarazim-pevelimedun-sasusajagusifen.pdf
    • http://minibaraddict.com/uploads/1/3/0/4/130435511/rikadiwu.pdf
    • http://qikbuild.com/uploads/1/3/0/7/130738779/176047.pdf
    • http://mikkokuorinki.com/uploads/1/3/0/5/130542775/juberokogu.pdf
    • http://mrglows.com/uploads/1/3/0/3/130324236/wegij_suxudineko_vipuzol_fabadulobusune.pdf
    • http://tukteacompany.com/uploads/1/3/0/6/130620364/3569616.pdf
    • http://mnguidedgoosehunting.com/uploads/1/3/0/7/130740232/545d122.pdf
    • http://blockchainambassador.ca/uploads/1/3/0/6/130604169/130604169.html#encyclopedia+of+life+support+systems%28+eolss+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001337.bin
b90c317d918321ac2196c214d6ffb39d355f2c27296723d2ae3c4d92d39cd73e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1337 8640 bytes

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