Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a1783e268c7547d…

MALICIOUS

PDF

42.5 KB Authoring application: Inkscape
MD5: 62fbfac2e7bec2e5c0a9dbbe772c4745 SHA-1: da567ef7d4587ad6b23659de6c95dca537a29dba SHA-256: 3a1783e268c7547daf59cb791388c2614a89aef040bf8a2933cf84773be71e5d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm pointing to multiple external PDF files, a common technique for phishing or distributing malware. The document body text, though partially corrupted, mentions 'Descargar whatsapp gratis para celul', indicating a lure to download a WhatsApp client. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing classification. No scripts were extracted from this sample.

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://bcattic.com/uploads/1/3/0/3/130323295/eda2d4ec54b3.pdf
    • http://skyeguy.com/uploads/1/3/0/5/130544898/58cb1f7c263393.pdf
    • http://myasianwiki.com/uploads/1/3/0/5/130543240/porakibulo.pdf
    • http://arcadiagardensllclandscapinganddesign.com/uploads/1/3/0/6/130605476/130605476.html#descargar+whatsapp+gratis+para+celul

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000ff4.bin
b26756a56279e6dea8c0050d64cc643ba9688011367b55fc38a2da23bf178601		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4 9328 bytes
font_01_sfnt_off000059c5.bin
00d02b604df31472440d05e8fbaa57eb7493b3447629a4fc5d70e40c0008594d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59C5 17928 bytes

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