Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6b30bcd1ebbb33…

MALICIOUS

PDF

32.0 KB Authoring application: Inkscape
MD5: 023ec240d45c231bdd4f41e5aaea5744 SHA-1: 6aea8ce3373efb521e34a8c5dfd5f457c2ba475d SHA-256: ce6b30bcd1ebbb338167e4d38045e8ae0c6c274d23c748503bf66e30397b5617
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. No scripts were extracted from this sample, but the extensive link farm suggests a phishing or content distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://childrensliteratureandreading.org/uploads/1/3/0/5/130538833/lulavo.pdf
    • http://southsidebrewing.net/uploads/1/3/0/6/130603822/kokibito.pdf
    • http://jilliananderic.com/uploads/1/3/0/6/130621587/1ac2659324a.pdf
    • http://planteriget.com/uploads/1/3/0/5/130589249/910731.pdf
    • http://chestnutpost.com/uploads/1/3/0/6/130640006/pilabawa-nelurejalejidi-wedawanax-dekipilejak.pdf
    • http://wyomingprideboxingclub.org/uploads/1/3/0/7/130775256/widido.pdf
    • http://liesandnews.com/uploads/1/3/0/6/130620538/rujamumitopepad-tazukal.pdf
    • http://pattycakecoach.com/uploads/1/3/0/4/130483959/c40221ea1.pdf
    • http://flyycollections.store/uploads/1/3/0/5/130550898/1120904.pdf
    • http://kow.eduardoamericomurrazzu.com/uploads/2020/01/28/vobozude.pdf
    • http://woodlandstuition.com/uploads/1/3/0/5/130588461/130588461.html#i+m+so+lonely+song++pagalworld

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000124c.bin
7a8f9745341b24b29e2292a41b27b4eef9671db366ff4b2b06a919c71c950602
pdf-font-stream PDF embedded font (sfnt) at offset 0x124C 7992 bytes