Malicious PDF — malware analysis report

Static analysis result for SHA-256 87348af746576ae1…

MALICIOUS

PDF

37.7 KB Authoring application: OpenOffice Draw
MD5: b496e379b3da82f5e33cb708efca8630 SHA-1: a218ab2d739bdd9b9fd2571333ac7751b329c94c SHA-256: 87348af746576ae11641dd5094cc3cfcf0573d0f9781281401550a9e53600ecb
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a coordinated effort to redirect users. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent, likely phishing or traffic redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://muwef.filka.icu/uploads/2020/01/28/9716354.pdf
    • http://quorumpro.com/uploads/1/3/0/7/130739751/lovavivigebarid.pdf
    • http://diabaz.ru/uploads/2020/01/28/efe308d.pdf
    • http://barringtonhillweddings.com/uploads/1/3/0/4/130488312/4008e.pdf
    • http://nealybirthandlactation.com/uploads/1/3/0/6/130605421/fularuselogofojeb.pdf
    • http://dietcenter.es/uploads/1/3/0/5/130551006/5625177.pdf
    • http://manuelarielcalderon.com/uploads/1/3/0/5/130545447/7433122.pdf
    • http://armsandmindsrenovations.com/uploads/1/3/0/4/130488273/zanoguzumuwuf-likamir.pdf
    • http://comalcommunityband.net/uploads/1/3/0/3/130323295/9376523.pdf
    • http://moir.se/uploads/1/3/0/5/130590555/26597f1.pdf
    • http://norawahlbrink.com/uploads/1/3/0/4/130476014/130476014.html#best+hacked+games+for+android

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000122a.bin
4b2ac3a71c9fbad28b95d499adae685cc1e90fd5e19f93b644bbad0cc6b6f70c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122A 7988 bytes

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