Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5860cfddd889627…

MALICIOUS

PDF

37.1 KB Authoring application: Smallpdf Desktop First seen: 2020-09-24
MD5: 8b8af36ef2331c26fcd4ec3d3e5a41c0 SHA-1: 7b17a0395a2c2b311fd95d6ccd2f9de03353cc9b SHA-256: b5860cfddd88962772b466a4bec5cbaef4710b70555af5284441cb7aecdcc328
94 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing attempt. It contains embedded URLs that likely lead to further malicious content, such as other PDFs. The document body, though heavily obfuscated, contains strings that appear to be URLs, suggesting a lure to download additional malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://courtneygriggseportfolio.com/uploads/1/3/0/4/130435711/kogalodaxit_dalekezuwowul.pdf PDF link annotation
    • http://modernpetparents.com/uploads/1/3/0/5/130588905/1590429.pdfIn PDF document text
    • http://diabetest1ireland.com/uploads/1/3/0/6/130620863/tidaxab_gufifenamivuri_xawovigejuruzed.pdfIn PDF document text
    • http://drmsanchez.com/uploads/1/3/0/5/130543121/130543121.html#gta+sa+araba+eklemeIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00001046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1046 9384 bytes
SHA-256: 0a538ba677f87cbed00229b9b6e98d119bea3f959706c4417e69532f2c63a5c2
font_01_sfnt_off00004513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4513 17648 bytes
SHA-256: 062abeeb0630068c9ebda4cd69880ba7d22c023ef851e82e77d1a768bfa0705b

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