Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c8a13ea5ff58ae5…

MALICIOUS

PDF

62.1 KB Authoring application: pstoedit
MD5: a338030834f3177c2c06910ba7da9713 SHA-1: 1ca0720f254c585b6337f7dbfdff105c87f532b1 SHA-256: 6c8a13ea5ff58ae5593956919c2aff74b806498feecf794c421d279eaba59017
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO spam or to redirect users to malicious sites. ClamAV detected this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', indicating a phishing or traffic redirection purpose. The embedded URLs are the primary indicators of this malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://dhhstheatre.org/uploads/1/3/0/4/130483756/sifalitozonebenija.pdf
    • http://pejawu.equilibrium-psyche.ru/uploads/2020/01/28/4647b2e606.pdf
    • http://mjjam.net/uploads/1/3/0/5/130588651/9909965.pdf
    • http://corecdinc.com/uploads/1/3/0/6/130604904/2598240.pdf
    • http://allamericandogexpo.com/uploads/1/3/0/4/130476943/130476943.html#sacred+heart+school+ateneo+de+cebu+uniform
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://www.adobe.com/).Noto
    • http://www.google.com/get/noto/http://www.adobe.com/type/This
    • http://scripts.sil.org/OFLNoto

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001269.bin
76c3e7f1295a6a412ea2b25b093adb0eea5125e79deef3ea1c650cec81e7efb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1269 9508 bytes
font_01_sfnt_off00009014.bin
ed0bb285ceb842ff9d663255cefa25cbd0a214cfb8b9ee0f868e74bf2dd8b44d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9014 16816 bytes
font_02_sfnt_off0000a74d.bin
e20ea6a7d7fcbf0ce1a9ba81cd9be4fd8dc488a01817ad7b73fa2eb2688bc6f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA74D 8816 bytes

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