Malicious PDF — malware analysis report

Static analysis result for SHA-256 453848ac817eb2b1…

MALICIOUS

PDF

35.4 KB Authoring application: LibreOffice
MD5: e5a33095e562828a5029b7813aba38d1 SHA-1: 25a42a775954ec2110aa21be8dfe21e821b3ae3f SHA-256: 453848ac817eb2b12d72d48d3d0b00dd05474d6b30ce163f21e16e5de9b85b03
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The document body content is heavily corrupted and unreadable, providing no additional context.

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://ganbeiliquor.com/uploads/1/3/0/7/130739747/wojututag.pdf
    • http://tribemotif.com/uploads/1/3/0/7/130739938/zejoralibedivowanid.pdf
    • http://www.makeupbyjuliahamilton.com/uploads/1/3/0/5/130542866/givisozomimikuw.pdf
    • http://sdvarietyoutlet.com/uploads/1/3/0/6/130621032/lapivofufep-sumabezofa.pdf
    • http://miembros-soylacasa.com/uploads/1/3/0/4/130435673/2586747.pdf
    • http://htrionline.org/uploads/1/3/0/5/130589252/8821521.pdf
    • http://mta-sts.carreyo.com/uploads/1/3/0/4/130435581/322816.pdf
    • http://www.thenaturalsnyc.com/uploads/1/3/0/6/130604651/7915137.pdf
    • http://hospicehangout.com/uploads/1/3/0/5/130539728/f3f5b.pdf
    • http://v-techsnc.com/uploads/1/3/0/6/130640003/32b32dc.pdf
    • http://ndhomesinc.com/uploads/1/3/0/6/130621435/sawuwopibeton_nifitekusozez_dorokirodudinon_ludawejoj.pdf
    • http://jessicamoquin.com/uploads/1/3/0/5/130589207/6988014.pdf
    • http://culturalinnovationgroup.org/uploads/1/3/0/9/130970022/bugojotibirogotibi.pdf
    • http://justusgirlsmarket.com/uploads/1/3/0/7/130740330/8893751.pdf
    • http://www.davidjiang.us/uploads/1/3/0/6/130604200/9c1121d3bab2c.pdf
    • http://cmi2011ltdeuropecom.com/uploads/1/3/0/6/130604770/darakegiforaw-rusivev-gulasoxu.pdf
    • http://bartolomeilaw.com/uploads/1/3/0/5/130551941/130551941.html#reading+worksheets+for+1st+graders+printable

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ef3.bin
84bac2d17adedb20c9929d501c3d686527cfd3f566ae143530f710ba74bac9b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF3 7712 bytes

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