Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c28f3dfa5761501…

MALICIOUS

PDF

40.5 KB Authoring application: SWFTools
MD5: 584becfb8dc6909f1610522ceeac24e1 SHA-1: 96a0547e824d6e200a2ca36a5279da38ad516180 SHA-256: 6c28f3dfa5761501d213c8eb362e1067c485da40d103e062fc66b0ddea2744d9
160 Risk Score

Malware Insights

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

The PDF contains a link farm of external PDF files, a common technique for SEO poisoning and distributing malicious content. The heuristic 'PDF_SEO_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly indicate a phishing or malware distribution attempt. The presence of embedded URLs further supports this, suggesting the document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://canllonga.es/uploads/1/3/0/4/130435821/puzuxovar.pdf
    • http://zagoxurigu.pyro.ru/uploads/2020/01/28/664e5612d4.pdf
    • http://nowthenfuture.com/uploads/1/3/0/5/130539091/2369715.pdf
    • http://libraconsultoria.com.br/uploads/1/3/0/5/130589050/6250320.pdf
    • https://nolobosun.weebly.com/uploads/1/3/0/5/130589131/7185100.pdf
    • http://smsawani.com/uploads/1/3/0/6/130621812/jetibupulaxute.pdf
    • http://newmexicofashioninfo.com/uploads/1/3/0/7/130775657/130775657.html#black+background+punjabi+video+status

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001081.bin
ce4f331607b095173bb9610c1e94e938ab875a6bce0e5e34f729a9443cb577fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1081 7800 bytes
font_01_sfnt_off00006032.bin
9638cd740d94bcd393f256b11ac9d03002205bffef05dbf4b36c49f71484b817		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6032 3108 bytes

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