Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eca67f719dbc062…

MALICIOUS

PDF

75.4 KB Created: 2021-09-12 21:09:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 3da1a7ea406881a0073ec76cc9fe117a SHA-1: 12f859ae656e90e3dc0ee4cf192f044fefbfc618 SHA-256: 5eca67f719dbc0629ea36aa51a7ff8dcba54e6cd16319c642cb66db9be1c76cb
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, with a significant number pointing to disposable hosting, indicative of a link farm. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent, likely phishing or malware delivery. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4750

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137853ba6c61---zokiriwixodobi.pdf In PDF document text
    • http://gyliver.ru/files/files/lotojitekakif.pdfIn PDF document text
    • http://vimbark.sk/editor_uploads/files/70379747796.pdfIn PDF document text
    • https://cncunse.com/d/files/tovapozafemolapilebugaxi.pdfIn PDF document text
    • http://glassick.com/userfiles/file/98506881758.pdfIn PDF document text
    • http://vrzion.com/data/userfiles/files/bepajuj.pdfIn PDF document text
    • http://arebiatours.com/uploads/files/bolitesebikulilumigilen.pdfIn PDF document text
    • http://theheavent.com/userfiles/files/6021739429.pdfIn PDF document text
    • http://jinyezi.cn/upload/tovoselulamaga.pdfIn PDF document text
    • http://nincity.de/inline/file/73514204199.pdfIn PDF document text
    • http://canavesiobruno-architetti.it/userfiles/files/sezerulukuzarago.pdfIn PDF document text
    • http://woodwaysindia.com/uploads/piwogubidemojapewukuteli.pdfIn PDF document text
    • https://mbzgogo.xyz/web/img/podborky/files/89537198718.pdfIn PDF document text
    • http://doremimarlikinsaat.com/userfiles/file/wewiku.pdfIn PDF document text
    • http://jualumnitoronto.com/editor/uploadfiles/sopolikotuboruwewalorop.pdfIn PDF document text
    • http://satit.nrru.ac.th/satit/_Adminis/ckfinder/userfiles/files/42559453929.pdfIn PDF document text
    • http://driscollandgibson.com/images/edit_images/file/siginekufifi.pdfIn PDF document text
    • http://bibrka-school.org.ua/ckfinder/userfiles/files/30943908870.pdfIn PDF document text
    • http://christopherdallo.com/file/33637147360.pdfIn PDF document text
    • https://gikguamerica.com/userfiles/file/futixozexukijusowawugu.pdfIn PDF document text
    • http://fotofolliasanlazzaro.it/userfiles/files/69761972292.pdfIn PDF document text
    • http://www.mearesandassociatesllc.com/siteuploads/editorimg/file/34118650260.pdfIn PDF document text
    • http://salocchi.it/userfiles/files/gefifonevidep.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/06f37657fdc239c6d673d04c085db593/rodubobif.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=i+quran+pro+apkPDF link annotation
    • 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.

FilenameKindSourceSize
font_00_sfnt_off0000d94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD94C 9996 bytes
SHA-256: fbd66a79b87e1dfaf7943ff4f477e3657ba7e659ef4aeb5af2869d3adb2a882e
font_01_sfnt_off0000ef76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF76 19092 bytes
SHA-256: 06dc0b3d968f5f6e4ba037936a12b63b74ee82195e71e9c3fd8a3ebff9c76655

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