Malicious PDF — malware analysis report

Static analysis result for SHA-256 d273f9adb1a203ab…

MALICIOUS

PDF

40.7 KB Authoring application: PDFedit
MD5: a688e43e0806e7387885c8665c6c6411 SHA-1: 6affee8a2d8955b73c11ac43ac6edf84322d5d38 SHA-256: d273f9adb1a203ab919e1903a7358c2282df68bd0fb8fb2332ed353af13513fe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which point to PDF files hosted on various domains. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates that the document's content is designed to trick the user into installing a browser extension or update. This is a common social engineering tactic used to deliver malware or steal credentials. The ClamAV detection further supports the malicious nature of the file.

Heuristics 4

  • 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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://lucynelle.net/uploads/1/3/0/2/130291471/gimuzewuzod_busuxebuxeb_witavek.pdf
    • http://wareted.ib-airbank.mobi/uploads/2020/01/28/984e282.pdf
    • http://boccesubscription.com/uploads/1/3/0/3/130323401/664c266b3da55.pdf
    • http://omegalul.pw/uploads/1/3/0/4/130488946/2229365.pdf
    • http://fepanatul.flowers-mood.ru/uploads/2020/01/28/tadixomew.pdf
    • http://bcbiofuel.org/uploads/1/3/0/6/130639201/kasanav.pdf
    • http://ktwines.net/uploads/1/3/0/5/130590613/98f80.pdf
    • http://natronacountyclassifiedprofessionalsassociation.org/uploads/1/3/0/3/130324420/pefaka.pdf
    • http://mikeandeli.nyc/uploads/1/3/0/4/130483147/petazudoxufifa.pdf
    • http://choreographerconsulting.com/uploads/1/3/0/4/130488362/9381290.pdf
    • http://thehnossaproject.com/uploads/1/3/0/3/130324270/130324270.html#google+extensions+json+formatter

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012df.bin
29eab41c0ebbd8699618db30f352bfa70471eed3f61da3a71847c71ed11fe9bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DF 9128 bytes
font_01_sfnt_off0000537b.bin
25e0abe2a3024e805133c77defbccc4a62d0fb2799be96e375311532bbdd9fb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x537B 18804 bytes

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