Malicious PDF — malware analysis report

Static analysis result for SHA-256 a673d90a839269fa…

MALICIOUS

PDF

36.5 KB Authoring application: OpenOffice.org
MD5: dedcd17d7a3a3f6b92a9ecd218a3814d SHA-1: 678ce8264ea0f3bbeedec29baa216214031a36c1 SHA-256: a673d90a839269fa2870a61f363fa54f34b01208d04e7bc6d00ac2d22314536f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, each hosting a PDF file with a numeric or slug-based filename. This pattern is consistent with SEO manipulation or a phishing campaign designed to distribute malicious content. No scripts were extracted from this sample, and the document body was heavily truncated and unreadable, limiting further analysis of the immediate user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://www.tamaolver.com/uploads/1/3/0/4/130483629/suxod.pdf
    • http://laurencecoachsport.com/uploads/1/3/0/6/130603983/wofob.pdf
    • http://myreflectar.com/uploads/1/3/0/6/130604658/nenifeg_jagufelawobaw_wuvonabijifi.pdf
    • http://webdisk.wildernessfamilies.org/uploads/1/3/0/5/130539697/musonasakovija.pdf
    • http://www.solfege101.com/uploads/1/3/0/5/130550871/zoxonibon_kikowaxalopomaw.pdf
    • http://retrofitinpractice.co.uk/uploads/1/3/0/4/130490774/gonatozavatafegojisu.pdf
    • http://trustcld.net/uploads/1/3/0/5/130590356/66ae5bf297.pdf
    • http://whitestonecloud.com/uploads/1/3/0/6/130603753/4902784.pdf
    • http://skincredible.net/uploads/1/3/0/6/130604368/rupela.pdf
    • http://ninapouesi.com/uploads/1/3/0/2/130270932/2979319.pdf
    • http://northhobby.us/uploads/1/3/0/5/130543006/virukalovasa.pdf
    • http://hotspringsrcclub.com/uploads/1/3/0/7/130776439/c5b9cb0acad.pdf
    • http://tellmesomethinggood.net/uploads/1/3/0/5/130589104/4b7eb5b108fe9.pdf
    • http://katdar.org/uploads/1/3/0/8/130874180/f0fd1a.pdf
    • http://fly5c.bpmtc.com/uploads/1/3/0/2/130271072/130271072.html#westworld+theme+piano+sheet+music+easy
    • http://northhobby.us/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000338e.bin
a46645f4c234a3213c650a3aa80ed6fce345dcc077989a39e32c9a57758b474b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x338E 9128 bytes

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