PDF malware analysis — malicious · da299c3475fa0b2e

MALICIOUS

PDF

55.2 KB Authoring application: LibreOffice First seen: 2021-05-29

MD5: 036d6b36277859d56ccdd23d555cf8f7 SHA-1: 78ce5e1181b463bd51140d871b499d63f938d04c SHA-256: da299c3475fa0b2ebdd4991f8e60c5810023e2fc65073e294079914673641a9d

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files hosted on Weebly, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or distributing further malware. The embedded URLs are the primary IOCs, pointing to a potential link farm or distribution network.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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 https://nusinedul.weebly.com/uploads/1/3/0/2/130271153/833a7d.pdf In PDF document text
- https://fasujejobi.weebly.com/uploads/1/3/0/2/130273584/wudirikiditijov-pumej-vidovubuzalije.pdfIn PDF document text
- https://zizapadan.weebly.com/uploads/1/3/0/3/130323633/c26e0b4aa1.pdfIn PDF document text
- https://rugoxewuf.weebly.com/uploads/1/3/0/5/130551041/404462.pdfIn PDF document text
- https://fakikologij.weebly.com/uploads/1/3/0/2/130287852/338450.pdfIn PDF document text
- https://bebadomum.weebly.com/uploads/1/3/0/5/130539875/rupadajanuzajok.pdfIn PDF document text
- https://muwagegi.weebly.com/uploads/1/3/0/4/130476722/badezo.pdfIn PDF document text
- https://nejegovabaziw.weebly.com/uploads/1/3/0/5/130550755/kokupuzowogo.pdfIn PDF document text
- https://nokirowipeva.weebly.com/uploads/1/3/0/3/130323146/c13bd998fb.pdfIn PDF document text
- https://mazulomubogur.weebly.com/uploads/1/3/0/4/130483756/5e98c9b.pdfIn PDF document text
- https://pesolaxowam.weebly.com/uploads/1/3/0/4/130479435/8621a03d3fe.pdfIn PDF document text
- https://pirixoxokibanod.weebly.com/uploads/1/3/0/5/130550790/vetiru-xizotaj.pdfIn PDF document text
- https://nulozidaw.weebly.com/uploads/1/3/0/4/130435876/fejubebaguxeso.pdfIn PDF document text
- https://rasavinev.weebly.com/uploads/1/3/0/4/130488417/c92219b6c0c.pdfIn PDF document text
- https://kipapaxotosuf.weebly.com/uploads/1/3/0/4/130477492/xedinubu.pdfIn PDF document text
- https://xesewinav.weebly.com/uploads/1/3/0/4/130488228/tivagusudikoba.pdfIn PDF document text
- https://lakidaru.weebly.com/uploads/1/3/0/4/130488691/kepejikonuxaxoxuvi.pdfIn PDF document text
- https://vomakomim.weebly.com/uploads/1/3/0/2/130271019/130271019.html#can+heavy+drinking+cause+brain+damageIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00000f6e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF6E	8628 bytes
SHA-256: `eae62c2401ecf78fdb179ff3bdd031ab2fb48f1da158a29b766ef9f27518fe7b`
`font_01_sfnt_off0000909e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x909E	16268 bytes
SHA-256: `5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798`

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