Malicious PDF — malware analysis report

Static analysis result for SHA-256 372a400a98fc738a…

MALICIOUS

PDF

84.1 KB Authoring application: Poppler-utils
MD5: f864b4d699eb849bc86904d73165b516 SHA-1: be3ca539eb992886b8522b98932afca72c415d15 SHA-256: 372a400a98fc738ab8d6b64d3c8dfe95e4da7c22d66857467cc815aa06492fb3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics, including ClamAV and a machine learning classifier, indicating malicious intent. The PDF contains a large number of embedded external links, suggesting a link farm or redirection mechanism. The primary purpose appears to be directing users to a network of external PDF files hosted on various domains, likely for SEO manipulation or to serve as a distribution point for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://oachristchurch.org/uploads/1/3/0/6/130604321/47bebbeb2df717.pdf
    • http://my-tbg.com/uploads/1/3/0/4/130488123/wudefufuwero_rifoxabetis_pimig.pdf
    • http://skoutsecurity.us/uploads/1/3/0/8/130814355/7dfd9ff80760e96.pdf
    • http://timecharm.com/uploads/1/3/0/6/130603696/pejexurelu.pdf
    • http://longboyulechengaomendubo.f18.ebkf.org/uploads/1/3/0/5/130539866/sivelutoluwiv.pdf
    • http://vietwiki.com/uploads/1/3/0/5/130543995/1186734.pdf
    • http://nghomeimprovment.com/uploads/1/3/0/4/130488569/65af2bf2fc.pdf
    • http://fartlyfe.com/uploads/1/3/0/4/130478160/64b7c175c8.pdf
    • http://nadiafarah.com/uploads/1/3/0/7/130738919/legorirud.pdf
    • http://sanowahyudiphotography.com/uploads/1/3/0/6/130620964/1490173.pdf
    • http://grannytaughtusgreen.com/uploads/1/3/0/5/130551094/tiwipizojisa.pdf
    • http://www.channelscott1.com/uploads/1/3/0/5/130589054/4ade66a560.pdf
    • http://mynehab.org/uploads/1/3/0/2/130289776/e25fb24b4618b.pdf
    • http://thedark.club/uploads/1/3/0/2/130274151/jelile.pdf
    • http://6zt2m.salon225.com/uploads/1/3/0/5/130540155/130540155.html#globalizacion+neoliberal+en+america+latina

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ef9.bin
51d08f924343c93fab1c5a4e8e264dee5776d0dff14e141269f17f73b7746658		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF9 9816 bytes

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