Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f8caf7265ceef45…

MALICIOUS

PDF

47.2 KB Authoring application: LibreOffice Draw
MD5: cf03662549f1112b86ed9ea767c8cdd5 SHA-1: cc060d46c49de7a2d216fd02258cb6f2405e9ddf SHA-256: 6f8caf7265ceef45a3d428d4b6aee8ccf5971cc3cd949bd4a02bbbb25e9472bb
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, as detected by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to manipulate search engine results or to distribute additional malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

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://realalfa.ru/uploads/2020/01/28/fuvedefozozuf-sixafalati-nojiki-jaxewewufin.pdf
    • http://cahoje.com/uploads/1/3/0/6/130621025/koxapirik_wumopewubu_sidiwugu_mobojapaw.pdf
    • https://zoloxamaxari.weebly.com/uploads/1/3/0/5/130551006/foladi.pdf
    • https://duvumojeda.weebly.com/uploads/1/3/0/4/130483667/nawero-semurabudasodag-lofaluxivo-xumuguk.pdf
    • http://nofesh.weebly.com/uploads/1/3/0/5/130540585/80ddefe8b.pdf
    • http://lifeafterdisability.com/uploads/1/3/0/5/130540118/4894912.pdf
    • http://missyateskindergarten.weebly.com/uploads/1/3/0/4/130483242/7874802.pdf
    • http://walujabov.pornoizler.site/uploads/2020/01/29/856214ef736d.pdf
    • http://jopumizelu.vitamin-b17.ru/uploads/2020/01/28/dumofafo.pdf
    • http://wssdar.com/uploads/1/3/0/5/130551270/2231091.pdf
    • http://albuquerquesunport.com/uploads/1/3/0/4/130476112/rosanesilo.pdf
    • http://smartasstarot.com/uploads/1/3/0/3/130379222/duzasu-zulovutanufikov-gutigifafi.pdf
    • http://bigskyaerialphoto.net/uploads/1/3/0/5/130550772/disugasiweji_luzak_povegamofefib.pdf
    • http://xuz.krsk-jalousie.ru/uploads/2020/01/29/xasokosuda-ledebu-xusedivugejapo.pdf
    • https://napanovesuzoloj.weebly.com/uploads/1/3/0/5/130543035/pakipezoxekuvu.pdf
    • http://tixul.dityavselennoy.com/uploads/2020/01/28/lanemawaladeko.pdf
    • http://dimazi.startyachting.ru/uploads/2020/01/29/1aeb22.pdf
    • https://febixakudonotu.weebly.com/uploads/1/3/0/4/130476652/6ca4b777a03e4.pdf
    • http://gomriz.com/uploads/1/3/0/2/130287942/130287942.html#kindergarten+phonics+worksheets+letter+a
    • http://www.adobe.com/).Noto
    • http://www.google.com/get/noto/http://www.adobe.com/type/This
    • http://scripts.sil.org/OFLNoto
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000176b.bin
f629fa3ad3f6e51c314b5e5922cde01f76f0f9f1e8890f90b0e496467c9af217		 pdf-font-stream PDF embedded font (sfnt) at offset 0x176B 7884 bytes
font_01_sfnt_off000063ac.bin
1671d4a6506f7deedb25c13781f115618252e1b93a4aad0bce3c1125e559b732		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63AC 4388 bytes
font_02_sfnt_off000070f4.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70F4 16204 bytes

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