Malicious PDF — malware analysis report

Static analysis result for SHA-256 c92cddb897a2dde4…

MALICIOUS

PDF

42.7 KB Authoring application: Adobe PDF Library 9.0
MD5: add8207eb64b47ebcd1d66796b7cdf90 SHA-1: 7880fd91912768bb2e4079e1a69ea0c98ff25bb3 SHA-256: c92cddb897a2dde4616380d1ea55aa23990b9de1a8ec3fc7dc164139a98559f4
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The file is a PDF document detected as malicious by ClamAV and an ML classifier, specifically identified as a phishing attempt. The document body, though heavily obfuscated, contains references to 'Firewall apk mirror' and multiple URLs pointing to other PDF files, suggesting a lure to download further malicious content. The presence of external URIs and embedded URLs strongly indicates a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://koerpertherapie-massagen.com/uploads/1/3/0/6/130604185/3720268.pdf
    • http://miupnorthwedding.com/uploads/1/3/0/5/130588784/f0517ec51966.pdf
    • http://houseofmapa.com/uploads/1/3/0/2/130288361/1599786.pdf
    • http://newmoses.com/uploads/1/3/0/3/130323738/1a1ae3b25.pdf
    • http://ineedexercise.com/uploads/1/3/0/4/130435555/9910155.pdf
    • http://mychinesewatch.com/uploads/1/3/0/6/130604874/130604874.html#firewall+apk+mirror

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010b8.bin
2b76ff807e7963de4230e9db811e2d01cba2c4c0328c25c87c5add9802dd21f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B8 9516 bytes
font_01_sfnt_off000060c5.bin
50dc865112b31b8628c9170d82daeefa18b8227744a71909c0440548ffdcd4ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x60C5 16132 bytes