Malicious PDF — malware analysis report

Static analysis result for SHA-256 00809fa003aa0705…

MALICIOUS

PDF

39.8 KB Authoring application: Serif PagePlus
MD5: 6d14db094a970074f0f7010a8ab6bbf4 SHA-1: 3932cacd54902954516874ef66723f5377d231dd SHA-256: 00809fa003aa0705daf18fa8cb8d7ac2b11226f29b423ddc79c3c90e67cc6bb5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document was flagged by multiple heuristics, including a critical finding for a link farm containing numerous external PDF URLs. The ML classifier also strongly indicated maliciousness. The embedded URLs suggest a phishing or SEO spam campaign, aiming to redirect users to potentially malicious content hosted across various domains.

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://nyanyakrasnoyarsk.ru/uploads/1/3/0/2/130271131/2601453.pdf
    • http://zoombuyz.com/uploads/1/3/0/3/130323377/ludolojefefek.pdf
    • http://mycreativeservices.space/uploads/1/3/0/4/130483906/8915326.pdf
    • http://dofigu.kanapes.net/uploads/2020/01/28/9690704.pdf
    • http://student-teaching.us/uploads/1/3/0/5/130590261/vigoxanuwaz.pdf
    • http://adammatheny.com/uploads/1/3/0/6/130620644/b2ecf3.pdf
    • http://gdetabletka.ru/uploads/2020/01/28/6beb31680f96e7b.pdf
    • http://somersetfoodtrail.org/uploads/1/3/0/3/130313176/130313176.html#active+and+passive+voice+examples+in+present+tense

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001191.bin
7aaba919f1adeb191a802912204de2146da95d2081ba19f5bc73045402c95989
pdf-font-stream PDF embedded font (sfnt) at offset 0x1191 8660 bytes