Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a777bf483de5db9…

MALICIOUS

PDF

43.6 KB Authoring application: OpenOffice Draw
MD5: 5cd712af8aacc0d37cd256f3f57faf43 SHA-1: b0d2a2c5d8a3dd5a6f8e1a8bb68adffc931e5f7b SHA-256: 6a777bf483de5db90616c981a388bd60f71b4023070a152b4a8b0289b9666f2c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious content. ClamAV and ML classifiers flagged this file as malicious, specifically identifying it as a phishing-related PDF. The embedded links likely serve as the primary attack vector, directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://tastytemptationsbytia.com/uploads/1/3/0/5/130551772/polebetiriwa_pisugegomaxeluj_zibesadanot.pdf
    • http://sanibelcondovacations.com/uploads/1/3/0/3/130323266/145bd5f0.pdf
    • https://velebujanegutib.weebly.com/uploads/1/3/0/5/130588937/6600870.pdf
    • http://sowikav.rentaprice.ru/uploads/2020/01/28/064d33e4f4d95eb.pdf
    • http://studio-dekoboko.com/uploads/1/3/0/6/130604508/keloxewolux.pdf
    • http://beingself-centered.com/uploads/1/3/0/6/130620222/130620222.html#how+to+calculate+molar+absorption+coefficient+without+concentration
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense
    • 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_off00001127.bin
300b7d3e10fa71a9f082373733d02c0ed0c4ad51cc1e13877207dafdaf3bf770		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1127 7888 bytes
font_01_sfnt_off000059d5.bin
453fb7942731013dcab42868264a9be19bd099a1032bb61405edb9d98f7c3022		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59D5 2840 bytes
font_02_sfnt_off0000633a.bin
6928d90e12d19dc382ba8c82e1cdc53272fa8b8ed2ed7db0bf937e0b53289b8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x633A 16188 bytes

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