Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef066e8ca3f1e74c…

MALICIOUS

PDF

37.7 KB Authoring application: pstoedit First seen: 2021-10-07
MD5: 964b454fc02c558f2d91c8a4dfdac5a6 SHA-1: 82012f5d7b508c971e406776477929994c9d064c SHA-256: ef066e8ca3f1e74c8a538b4b111a00444ebe6e610ba3b6a94b42e6820c6f2ca1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, identified as a link farm. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating an attempt to direct users to external malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious nature of this document, likely related to phishing or traffic redirection. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

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://ottica2g.com/uploads/1/3/0/4/130483184/f60d5d.pdf In PDF document text
    • http://portugalnew.com/uploads/2020/01/28/wiwipa.pdfIn PDF document text
    • http://keysboatdocks.com/uploads/1/3/0/2/130291971/56a103.pdfIn PDF document text
    • http://retodudil.therutor.tech/uploads/2020/01/28/ab2a195.pdfIn PDF document text
    • http://wimup.punish-me-for.fun/uploads/2020/01/27/a49b341f.pdfIn PDF document text
    • http://nhabatdongsan.com/uploads/1/3/0/3/130313582/kugolikukezimob.pdfIn PDF document text
    • http://duvun.espace-clientsv3-0range.com/uploads/2020/01/28/fusodi_mikuvugube.pdfIn PDF document text
    • http://amazonpropertymanagement.us/uploads/1/3/0/6/130604420/bilenopapafe.pdfIn PDF document text
    • http://ledilolli.com/uploads/2020/01/28/visowunugigire-xutot.pdfIn PDF document text
    • http://ssunitedstatesreef.com/uploads/1/3/0/6/130604621/lugagomexev.pdfIn PDF document text
    • http://lisuntimor.com/uploads/1/3/0/4/130488530/1273251.pdfIn PDF document text
    • https://kawiranozisu.weebly.com/uploads/1/3/0/2/130272414/falegux-sopume-gexaz-soditafilabogux.pdfIn PDF document text
    • http://bartsbullets.com/uploads/1/3/0/5/130539235/4364747.pdfIn PDF document text
    • https://zetigebinuzeral.weebly.com/uploads/1/3/0/5/130550652/voroda.pdfIn PDF document text
    • http://brandirmunoz.com/uploads/1/3/0/5/130588763/turexewovo.pdfIn PDF document text
    • https://suvaxuvip.weebly.com/uploads/1/3/0/4/130435646/91cce55.pdfIn PDF document text
    • https://tubinuwo.weebly.com/uploads/1/3/0/5/130539913/kewes.pdfIn PDF document text
    • http://sunsetsailkeywest.co/uploads/1/3/0/6/130620567/3253320.pdfIn PDF document text
    • http://miwus.10i5.com/uploads/2020/01/27/afad5.pdfIn PDF document text
    • http://msvetnaportfolio.com/uploads/1/3/0/6/130621422/130621422.html#passive+voice+simple+past+tense+exercises+pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1730 8404 bytes
SHA-256: 5b51f2b2f81d00f774e1327825a00ed8514dce37e9d8ed7254b7ee40683370c9

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