PDF malware analysis — malicious · e47c792fc433105e

MALICIOUS

PDF

239.0 KB Created: 2017-11-24 07:09:50 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))

MD5: de0c72f861019f429e6e1c74cf84db7b SHA-1: d4d16e926d7ee449b16fbb79ecd2fee6996a0acb SHA-256: e47c792fc433105e8f9cb846c1e731639ecdb173be882ac39efe06d7132cf2a9

62 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains embedded scripts and external URIs, indicating a malicious intent to redirect users to potentially harmful websites. The ML classifier strongly flagged this PDF as malicious. The embedded script payload suggests the potential for further malicious actions, such as downloading and executing additional payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9846

Heuristics 5

Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules.
External URI info PDF_URI

PDF contains an external URL action
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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://www.lnt.eng.br/armacon.html
- http://www.multcalc.com.br/calcvigas.html

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off0000bb4a.bin` `a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xBB4A	264072 bytes
`embedded_pdf_script_0003acfa.bin` `f1ce4375b2594a5a6bdd1c917c0321173768f16d74c1a190f22a1e46053c7e25`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x3ACFA	244745 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.