Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c756222aae669fe…

MALICIOUS

PDF

34.2 KB Authoring application: LibreOffice
MD5: 9aac7314e2f65704887e153277458220 SHA-1: 6c279a6c4d1ca3bc93c6170bfc7e6f9b6fca3264 SHA-256: 7c756222aae669fe84a65650b7337ded4070d2996d605c48dd6a4eac3918e578
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, identified as a link farm. This suggests a phishing or malware distribution attempt, likely to trick users into downloading further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports this malicious intent. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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 https://fumevoluj.weebly.com/uploads/1/3/0/5/130539652/7001968.pdf
    • http://faku.kovriki.online/uploads/2020/01/28/db9f2e6.pdf
    • http://tagik.beri-bolshe.com/uploads/2020/01/28/medusegisofubu.pdf
    • https://bopaxorik.weebly.com/uploads/1/3/0/3/130313057/63822981f78bb4c.pdf
    • http://bilisaro.windows10keys.net/uploads/2020/01/29/866657b57af.pdf
    • http://sele.bigdigitag.com/uploads/2020/01/28/d22b9627c.pdf
    • http://jis.vizitki-listovki.ru/uploads/2020/01/27/ff46f95a8b.pdf
    • https://zafojewun.weebly.com/uploads/1/3/0/2/130289558/veravijejovetanedut.pdf
    • http://vuzo.insidersport.info/uploads/2020/01/28/lipudarozuvad.pdf
    • https://kaxodame.weebly.com/uploads/1/3/0/5/130538956/130538956.html#antech+acth+stimulation+test+protocol

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011f5.bin
039320d5fbee41d7e2a8f045de36ad7093adeec01df735d2b8fe52d9fb5d733f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F5 8224 bytes

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