Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bde63592a31088e…

MALICIOUS

PDF

37.8 KB Authoring application: OpenOffice Draw
MD5: 4fda4b7bcc4d8ffb42578a03439e0880 SHA-1: 38a3c8b0309a5c89d94f8e5a74cf61122f1f8d96 SHA-256: 5bde63592a31088e97886bf85d01ab672324fb725a96757906540e4bb48a0c45
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malware. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to malicious content, potentially leveraging JavaScript for execution.

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://nags.weebly.com/uploads/1/3/0/5/130551986/886a99ab88b.pdf
    • http://fruitoffaith.org/uploads/1/3/0/5/130590051/6754381.pdf
    • http://ragnarlegend.com/uploads/1/3/0/4/130483290/seteter_viregiza.pdf
    • http://phhlca.org/uploads/1/3/0/4/130483125/zadobegat.pdf
    • http://djournalebydn.com/uploads/1/3/0/5/130540097/ratix_zixitafi_kekuv.pdf
    • http://budapestfoodandtravel.com/uploads/1/3/0/4/130476447/gunik_porefebila_mipegexagek_fupep.pdf
    • http://poppinpioneervalley.com/uploads/1/3/0/6/130640025/617699.pdf
    • http://southwesterntennisservices.com/uploads/1/3/0/3/130313286/berodasunuv.pdf
    • http://onesimplyiris.com/uploads/1/3/0/7/130775379/b233540.pdf
    • http://southwesteduacademy.weebly.com/uploads/1/3/0/5/130539657/rufilujapibol-jarodasirazizu-dadiviwiguw.pdf
    • http://northwestuu.com/uploads/1/3/0/5/130540725/130540725.html#lower+abdominal+cramping+in+first+trimester

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000129a.bin
33ef7bf138ebb8acd9995dbb9232bb3386fa72706d9d6320fa60c385961259c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129A 7844 bytes

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