Malicious PDF — malware analysis report

Static analysis result for SHA-256 61d81dae88112669…

MALICIOUS

PDF

46.4 KB Authoring application: Karbon
MD5: dfba2e9bfbc1e39b6221674ce1384b6c SHA-1: e5eb07c9f8a3a116967750be38ef7e2782c67a62 SHA-256: 61d81dae8811266981dfc8152b7a31b7a2b5710af62a0294046c86bd50417187
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a coordinated effort to distribute content or manipulate search engine results. The ML classifier and ClamAV detection further confirm the malicious nature of the file. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://mgservicios.net/uploads/1/3/0/3/130313624/7355ea79.pdf
    • https://vedosezixoz.weebly.com/uploads/1/3/0/4/130476145/vobuvew.pdf
    • https://zusabozazi.weebly.com/uploads/1/3/0/5/130590092/zifisusov-dufezifepob-xizifuxu-fofita.pdf
    • http://radujniy.info/uploads/2020/01/29/samasasa-vipijixeza.pdf
    • http://goreferences.com/uploads/1/3/0/4/130436068/6762020.pdf
    • http://nles-boutique.com/uploads/1/3/0/5/130542996/kakixude.pdf
    • http://anniepagekarjian.weebly.com/uploads/1/3/0/6/130639449/widumij.pdf
    • https://tevixumadat.weebly.com/uploads/1/3/0/2/130287835/296d7b3e544c25b.pdf
    • http://leplaisirdevendre.com/uploads/1/3/0/4/130489649/sowiseropun-badibax.pdf
    • http://proximposicionamiento.com/uploads/2020/01/29/8607766.pdf
    • http://kineticchiropracticstudio.com/uploads/1/3/0/6/130604129/pevowarebi-telalo.pdf
    • http://vendeus.com/uploads/1/3/0/2/130271085/2543327cbaba9e.pdf
    • http://mycpmc.com/uploads/1/3/0/2/130272384/xiretubum.pdf
    • http://vobazul.rugbyspb.ru/uploads/2020/01/27/bipusiteler.pdf
    • http://mikoduwone.mediaprojethaiti.org/uploads/2020/01/28/gebukivamidijekoko.pdf
    • http://duxoza.gate2019iitm.online/uploads/2020/01/28/rexiwadoliwug.pdf
    • http://nationalhellenicsociety.net/uploads/1/3/0/5/130550664/rapababuv.pdf
    • http://arpersonaltouch.com/uploads/1/3/0/6/130620207/2792741.pdf
    • http://museta.provzor.ru/uploads/2020/01/27/9701318.pdf
    • http://sportsplatinium.com/uploads/1/3/0/4/130476538/xiwiwazi-kakipepoweleb-kuvevusumip.pdf
    • http://mmarieboutique.com/uploads/1/3/0/3/130379371/tuwivazoz-buxowuf-bopemesaxenejaj-luvakudasade.pdf
    • http://fuerzaypoder.org/uploads/1/3/0/5/130589178/726e199332b3.pdf
    • http://nationalriskmanagementgroup.com/uploads/1/3/0/6/130621190/130621190.html#plan+cimetiere+pere+lachaise
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000018a1.bin
bb33321863b17956028807746b7ccd7d197455f206a4ac4ea43a819ee8b3f60b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18A1 9256 bytes
font_01_sfnt_off00006dd9.bin
8525ee7d27cbb4c9a8daaca9e1736245a4c0232412408609c87b09b5bb70abb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD9 16172 bytes

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