Malicious PDF — malware analysis report

Static analysis result for SHA-256 887c3897cd18ce36…

MALICIOUS

PDF

33.9 KB Authoring application: LibreOffice
MD5: ded13fea1d58d733a656907f6ec3e88b SHA-1: ffe960d6825f6f14bf4901e048f7cc2a3051240f SHA-256: 887c3897cd18ce3694ed550d409d72d524306eeed9394ac8e84807c14ea1b526
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of a link farm or a phishing campaign designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://research-usa.com/uploads/1/3/0/2/130271207/tabuwisufi-lazalun-zududatub-xabanix.pdf
    • http://baynotnhac.com/uploads/1/3/0/6/130620364/1358457.pdf
    • http://myers-adams.com/uploads/1/3/0/2/130272513/metesovuwalixabumi.pdf
    • http://rscrystalmedicine.com/uploads/1/3/0/5/130551671/6342273.pdf
    • http://charissamemricksoprano.com/uploads/1/3/0/5/130589124/6042a439eef.pdf
    • http://victoryconsutlingtravel.com/uploads/1/3/0/8/130814462/xuxogixijabiz.pdf
    • http://freemichiganquotes.com/uploads/1/3/0/6/130620443/3fc16.pdf
    • http://northwestpetscanning.com/uploads/1/3/0/2/130287882/kepijutuduna.pdf
    • http://securityheadquarters.com/uploads/1/3/0/4/130483070/mijomivafibajenotud.pdf
    • http://rayraybeats.com/uploads/1/3/0/3/130312998/zijanulilaroro_wekeripabo.pdf
    • http://www.latchfordcelebrants.com/uploads/1/3/0/4/130483407/da8210c10.pdf
    • http://midiklorians.com/uploads/1/3/0/6/130639953/3676737.pdf
    • http://vancouvermiatas.com/uploads/1/3/0/5/130590710/5947815.pdf
    • http://soldiercreekchurchofchrist.org/uploads/1/3/0/7/130739324/bogatop.pdf
    • http://beadmesilly.com/uploads/1/3/0/6/130640097/adda25.pdf
    • http://jinduyulechengbaicaihuodong.br3h.com/uploads/1/3/0/5/130589331/130589331.html#how+to+draw+frequency+polygon+in+statistics
    • http://vancouvermiatas.c

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002a5f.bin
47d964748ade22694f84a51ef08b41367b46f62737d8e3d91344ce08e97d3b08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A5F 7528 bytes

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