Malicious PDF — malware analysis report

Static analysis result for SHA-256 87c62b8c92bc8a99…

MALICIOUS

PDF

37.1 KB Authoring application: LibreOffice First seen: 2020-09-24
MD5: 6da8350a79973d559021441a5e2225d8 SHA-1: 29134a877f0e5c9f3b4183280abb13775316a0e7 SHA-256: 87c62b8c92bc8a993d1c2e0348b4f6cb642248b33eca83d71af7399361d0e818
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, indicating a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the sheer volume of external links is highly suspicious.

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://www.deine-va.de/uploads/1/3/0/6/130604741/5914241.pdf In PDF document text
    • http://kentmindfulnesscentre.org/uploads/1/3/0/6/130604505/bc6834469c99cd.pdfIn PDF document text
    • http://cicchiservizi.com/uploads/1/3/0/6/130620936/kepogorol.pdfIn PDF document text
    • http://ritterassociates.net/uploads/1/3/0/5/130588687/9310606.pdfIn PDF document text
    • http://cranecrews.com/uploads/1/3/0/2/130271240/balujatobamat.pdfIn PDF document text
    • http://mta-sts.mx.omgp.org/uploads/1/3/0/7/130739375/xugegokipoweju.pdfIn PDF document text
    • http://mendozafunez.com/uploads/1/3/0/2/130291591/bamibodafolowiraji.pdfIn PDF document text
    • http://spiritofthehorsestables.com/uploads/1/3/0/6/130639116/siwinejugo_rerijofuviwu_lujolusale.pdfIn PDF document text
    • http://finbitgroup.org/uploads/1/3/0/5/130589384/5788993.pdfIn PDF document text
    • http://triptexts.com/uploads/1/3/0/5/130541597/4eb7e32a5fa.pdfIn PDF document text
    • http://abject-adventures.com/uploads/1/3/0/5/130588307/nasinaseverapa-finanopegozi-dewafulolon.pdfIn PDF document text
    • http://dietcenter.es/uploads/1/3/0/6/130640028/244c44f.pdfIn PDF document text
    • http://jimability.net/uploads/1/3/0/3/130379597/bonevamufam.pdfIn PDF document text
    • http://rachelnurmiart.com/uploads/1/3/0/6/130621292/tebipinowa.pdfIn PDF document text
    • http://stenhusebolig.dk/uploads/1/3/0/2/130289424/1391472.pdfIn PDF document text
    • http://ccevenice.com/uploads/1/3/0/5/130540009/xenoro.pdfIn PDF document text
    • http://www.thekingdomsociety.com/uploads/1/3/0/6/130603676/9258a35a0d8451.pdfIn PDF document text
    • http://doitmovin.com/uploads/1/3/0/6/130622022/1948191.pdfIn PDF document text
    • http://www.mctaggartcapitalllc.com/uploads/1/3/0/7/130775826/jisudi-wixuvuma.pdfIn PDF document text
    • http://noahsgiftsandgallery.com/uploads/1/3/0/6/130604715/rolukaguzerud_vinazuzufa_garepop_mezusuxeveriwod.pdfIn PDF document text
    • http://cpanel.collegedemsatiu.com/uploads/1/3/0/6/130603676/130603676.html#reading+exercises+grade+5In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3134 8020 bytes
SHA-256: 7f8cf075f89c030921b47be2939a58826875dfb33adc2a9d1d429147610d0d0f