Malicious PDF — malware analysis report

Static analysis result for SHA-256 645c62634cfc5687…

MALICIOUS

PDF

19.0 KB Created: 2019-05-02 05:07:15 +01:00 Authoring application: mPDF 5.7
MD5: 288c05690c0460b43a3016a370148015 SHA-1: 7d094687b50089fa834c20edc96be1654f80d0d2 SHA-256: 645c62634cfc5687cb952fd05a060036bcaf7a2c484a0242f5c307b99ef95a01
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. While many of these links were classified as benign, the sheer volume and the critical heuristic firing suggest a malicious intent, likely to distribute further malware or engage in SEO spam. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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.Dropper.Agent-7496889-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7496889-0
  • 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://cefasfese.4pu.com/6732737738731735/Frida-Kahlo-by-Salomon-Grimberg.pdf
    • http://cefasfese.4pu.com/1730736737738737739/Simone-Weil-A-Life-by-Simone-P-trement.pdf
    • http://cefasfese.4pu.com/9738739732738737/Kommissar-Fr-hlich-Nur-ein-Niemand-by-Stephan-Hagenow.pdf
    • http://cefasfese.4pu.com/9732738731737735/Wie-we-zijn-wanneer-we-denken-dat-er-niemand-kijkt-by-Christian-Rudder.pdf
    • http://cefasfese.4pu.com/9735732731731738/Niemand-rettet-sich-allein-Roman-by-Margaret-Mazzantini.pdf
    • http://cefasfese.4pu.com/4733733730736738/The-Marquis-de-Sade-An-Essay-by-Simone-de-Beauvoir-by-Simone-de-Beauvoir.pdf
    • http://cefasfese.4pu.com/1730735739736739731/Hamann-s-Schriften-Th-Metakritik-ber-Den-Purismum-Der-Reinen-Vernunft-Golgatha-amp-Scheblimini-Fliegender-Brief-an-Niemand-Den-Kundbaren-Briefe-1784-88-Siebenter-Theil-by-Johann-Georg-Hamann.pdf
    • http://cefasfese.4pu.com/1730735733733735735/Projekt-Cham-leon-Ein-Junge-rast-mit-seinem-Motorrad-in-den-Tod-ein-anderer-springt-vom-Dach-Die-Teenager-von-Sheffield-drehen-durch-und-niemand-ahnt-da-Paul-McGinnis-an-einem-neuen-Forschungsprojekt-arbeitet-by-Carol-K-Mack.pdf
    • http://cefasfese.4pu.com/3739736731731733/The-Simone-Weil-Reader-by-Simone-Weil.pdf
    • http://cefasfese.4pu.com/3731735738737736/The-Company-We-Keep-by-Kay-Simone.pdf
    • http://cefasfese.4pu.com/3733739731735736/The-Aftermath-by-Kay-Simone.pdf
    • http://cefasfese.4pu.com/2734737739735731/Vacationista-by-Tara-Simone.pdf
    • http://cefasfese.4pu.com/4733732731730731/The-Game-Changer-by-Kay-Simone.pdf
    • http://cefasfese.4pu.com/5734734734731/The-Blood-of-Others-by-Simone-de-Beauvoir.pdf
    • http://cefasfese.4pu.com/7731732739731734/Goth-Christmas-by-R-M-Simon-.pdf
    • http://cefasfese.4pu.com/6736737730732731/Oasis-by-Timothy-Simone.pdf
    • http://cefasfese.4pu.com/7730733739739735/A-Perfect-Fit-by-Naima-Simone.pdf
    • http://cefasfese.4pu.com/1739733732738735/Red-Sonja-1-by-Gail-Simone.pdf
    • http://cefasfese.4pu.com/1730730737730739733/Judenstaat-by-Simone-Zelitch.pdf
    • http://cefasfese.4pu.com/4737738733737733/The-Blood-of-Others-by-Simone-de-Beauvoir.pdf

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