Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e2e6ce8d22d7574…

MALICIOUS

PDF

25.2 KB Authoring application: Smallpdf Desktop
MD5: fdfe8b51c4c01d27eb5d91a336d7001b SHA-1: f4a6819c773108cb7be6fa30db8a0fa7c8ee0c40 SHA-256: 4e2e6ce8d22d757436d06a7ef1e43022432a25c829d9ffbb80f65f122d5d1d77
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique commonly used for SEO poisoning or phishing campaigns. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing classification. The embedded links likely lead to malicious or compromised websites designed to trick users into downloading further malware or revealing sensitive information.

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://mu-unsleep.fun/uploads/2020/01/27/savevudane.pdf
    • http://digitalbusinessinsider.net/uploads/1/3/0/3/130313031/9828295.pdf
    • http://vivygirl-designs.com/uploads/1/3/0/4/130477278/tixarunolirisek.pdf
    • http://nak.atrilmedia.com/uploads/2020/01/27/zinewesum_jepiro_dufevujete_zavopun.pdf
    • http://superawesomegadgets.com/uploads/1/3/0/3/130324119/009f75fc8.pdf
    • http://multistreams.com/uploads/1/3/0/6/130639632/130639632.html#input+type+file+selected+file+name

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fd1.bin
528201adc823cb34448f351e194fb66a8ca7d61a59da0ba68afffe5796d5909f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD1 6180 bytes

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