Malicious PDF — malware analysis report

Static analysis result for SHA-256 799fcd45c71af93a…

MALICIOUS

PDF

41.5 KB Authoring application: LibreOffice Draw
MD5: c151499f21cd1edd7b0611f3cb80ae57 SHA-1: ec985bbb3f6c9faa4cc1d725722c9b1062a3094d SHA-256: 799fcd45c71af93abefc1de6c4b3a22d080de7668118e954e57bf030a9b556c8
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of external links to other PDF files, a technique commonly used for SEO poisoning to drive traffic to malicious sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The document body, while containing educational text, also embeds numerous URLs pointing to potentially malicious PDF content, suggesting a phishing or traffic redirection scheme.

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://sainttheresacatholicchurch.com/uploads/1/3/0/6/130605432/tujedomaweguraxope.pdf
    • http://bakersfieldbreakoutzone.com/uploads/1/3/0/4/130483753/wusete-gigat.pdf
    • http://anchorfertilitycare.com/uploads/1/3/0/5/130589252/9389092.pdf
    • http://bandgphotography.net/uploads/1/3/0/6/130620975/c5d35098.pdf
    • http://ciaranhorton.weebly.com/uploads/1/3/0/5/130543656/duverekoz.pdf
    • http://myriadpharmacy.com/uploads/1/3/0/6/130604303/8193056.pdf
    • http://partisanrecords.net/uploads/1/3/0/7/130739889/vozijunado-razetefedolas-doduxep.pdf
    • http://bloodsugarbikemagic.com/uploads/1/3/0/6/130604181/benizawo.pdf
    • http://palladianpartner.com/uploads/1/3/0/5/130539218/razakajopi.pdf
    • http://bienchulas.com/uploads/1/3/0/5/130541186/xewuxibadaj_xevulexe.pdf
    • http://2020blue.org/uploads/1/3/0/7/130740141/130740141.html#comparative+and+superlative+adjectives+perfect+english+grammar

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012b2.bin
4ff1406e2ad5c7094875d453f364cfb0acacb0f2799eb2211efd54827b71c334		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B2 8012 bytes
font_01_sfnt_off000066e0.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E0 2652 bytes

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