Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f8caf7265ceef45…

MALICIOUS

PDF

47.2 KB Authoring application: LibreOffice Draw First seen: 2020-09-24
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

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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000176b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x176B 7884 bytes
SHA-256: f629fa3ad3f6e51c314b5e5922cde01f76f0f9f1e8890f90b0e496467c9af217
font_01_sfnt_off000063ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AC 4388 bytes
SHA-256: 1671d4a6506f7deedb25c13781f115618252e1b93a4aad0bce3c1125e559b732
font_02_sfnt_off000070f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F4 16204 bytes
SHA-256: f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d

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