Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3da23acba75f393…

MALICIOUS

PDF

49.1 KB Authoring application: Smallpdf Desktop First seen: 2020-09-24
MD5: 55db9aa437a908a0bf03dd316de7948c SHA-1: 3343d04c48c382bbcde14dd8052dc6496567e9c0 SHA-256: d3da23acba75f393469384fdfe18b5af598c29b3377d8f73a437dc47ea11b4eb
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs pointing to external resources, and ClamAV detection indicates it is a phishing attempt. The ML classifier also strongly flagged this PDF as malicious. The presence of external URIs suggests the document is designed to redirect the user to download further malicious content, likely a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://reliablelimoja.com/uploads/1/3/0/5/130550696/aaea81e.pdf PDF link annotation
    • http://dynamicathleticcenter.com/uploads/1/3/0/6/130605497/nerojokesimumop_bopuwub.pdfIn PDF document text
    • http://rcloud.net/uploads/1/3/0/2/130289371/8085057.pdfIn PDF document text
    • http://newperspectivemedical.com/uploads/1/3/0/6/130620801/130620801.html#environmental+carcinogenesis+pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00008546.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00008546.bin)
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn extracted file (font_01_sfnt_off00008546.bin)
🗂 Part of campaign: biztriage.com 9 samples

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD1 8156 bytes
SHA-256: a1e677ff7139df7afe692ac6656a6f17ae129fe3671cbd97baed36b289119e8c
font_01_sfnt_off00008546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8546 2892 bytes
SHA-256: a98ea1ab65533aa5a8d930a9ecda3240c4afa5cda94bda55fcb893fdfae47903

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