Malicious PDF — malware analysis report

Static analysis result for SHA-256 33cd248e098e72c7…

MALICIOUS

PDF

34.5 KB Authoring application: OpenOffice.org
MD5: f69860d2457f0f8346d05e2ec68aa9e3 SHA-1: 495805a8bae48ffcc7f49da3ce22685f56f3d5d1 SHA-256: 33cd248e098e72c7a34de4515c8246d5f2435be4a21b5dcde0de5a8fcedb308b
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. These URLs point to various external PDF files hosted on different domains. The ML classifier and ClamAV detection strongly indicate maliciousness, consistent with a phishing or SEO spam campaign designed to distribute further malicious content or manipulate search engine results. No scripts were extracted from this sample.

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://activemech.com/uploads/1/3/0/4/130476322/50005e9e217a8d.pdf
    • http://russianboutique.co.uk/uploads/1/3/0/6/130621290/0ef1f66.pdf
    • http://rbaltazar.com/uploads/1/3/0/4/130483540/3008ff06d.pdf
    • http://alvarezorganics.com/uploads/1/3/0/2/130272250/a386d924f000b7.pdf
    • http://fribergfysikalske.com/uploads/1/3/0/2/130288383/3139331.pdf
    • http://papa.mojenmoney.xyz/uploads/2020/01/27/530709.pdf
    • http://monipirie.com/uploads/1/3/0/4/130476385/e835e0b146.pdf
    • http://bakeline.ca/uploads/1/3/0/5/130539428/5ddbeb11fc810.pdf
    • http://mikeeclark.com/uploads/1/3/0/6/130604407/sevomegefozotufadi.pdf
    • http://xexu.viptip.pro/uploads/2020/01/27/mufak.pdf
    • http://wrinkleddogs.com/uploads/1/3/0/4/130436108/vidunatoja.pdf
    • http://dipiudesign.eu/uploads/1/3/0/5/130588410/pazupo.pdf
    • http://mijnheerdegroot.nl/uploads/1/3/0/5/130542977/48557af8554e.pdf
    • http://nelaalen.com/uploads/1/3/0/5/130589032/527c9018a05dd.pdf
    • http://milwaukeepestpros.com/uploads/1/3/0/5/130543158/poxevefolop.pdf
    • http://coybutstormy.com/uploads/1/3/0/4/130476791/6183474.pdf
    • http://milton-trails.com/uploads/1/3/0/4/130483879/lepapajibepa_wizonow_tovoworufam_wopuva.pdf
    • http://miami.momotombochocolatefactory.com/uploads/1/3/0/6/130621576/130621576.html#chandaal+mithun+chakraborty+video+song

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001476.bin
f74105ec0ce3f093d1467c4ee4b18e3fdb342e79305793733b3ad06a94f223b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1476 8296 bytes

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