Malicious PDF — malware analysis report

Static analysis result for SHA-256 87348af746576ae1…

MALICIOUS

PDF

37.7 KB Authoring application: OpenOffice Draw First seen: 2020-09-24
MD5: b496e379b3da82f5e33cb708efca8630 SHA-1: a218ab2d739bdd9b9fd2571333ac7751b329c94c SHA-256: 87348af746576ae11641dd5094cc3cfcf0573d0f9781281401550a9e53600ecb
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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 In PDF document text
    • http://quorumpro.com/uploads/1/3/0/7/130739751/lovavivigebarid.pdfIn PDF document text
    • http://diabaz.ru/uploads/2020/01/28/efe308d.pdfIn PDF document text
    • http://barringtonhillweddings.com/uploads/1/3/0/4/130488312/4008e.pdfIn PDF document text
    • http://nealybirthandlactation.com/uploads/1/3/0/6/130605421/fularuselogofojeb.pdfIn PDF document text
    • http://dietcenter.es/uploads/1/3/0/5/130551006/5625177.pdfIn PDF document text
    • http://manuelarielcalderon.com/uploads/1/3/0/5/130545447/7433122.pdfIn PDF document text
    • http://armsandmindsrenovations.com/uploads/1/3/0/4/130488273/zanoguzumuwuf-likamir.pdfIn PDF document text
    • http://comalcommunityband.net/uploads/1/3/0/3/130323295/9376523.pdfIn PDF document text
    • http://moir.se/uploads/1/3/0/5/130590555/26597f1.pdfIn PDF document text
    • http://norawahlbrink.com/uploads/1/3/0/4/130476014/130476014.html#best+hacked+games+for+androidIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000122a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122A 7988 bytes
SHA-256: 4b2ac3a71c9fbad28b95d499adae685cc1e90fd5e19f93b644bbad0cc6b6f70c

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