Malicious PDF — malware analysis report

Static analysis result for SHA-256 653ecd8210850208…

MALICIOUS

PDF

32.1 KB Authoring application: OpenOffice Draw
MD5: f2c188768af69ac5b439e74b54328256 SHA-1: 6bcb234cb153ce0075cb4e712117de331eda2582 SHA-256: 653ecd82108502082629faa9ad02b4254c409c53917414ac7c1e7d7c1352cde5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious sites.

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://meredithship.weebly.com/uploads/1/3/0/2/130289211/2153eb3.pdf
    • http://rafalune.chama.site/uploads/2020/01/29/a0dece4.pdf
    • http://nileshsp.com/uploads/1/3/0/4/130483230/544d3d2.pdf
    • http://childrensliteratureandreading.org/uploads/1/3/0/4/130492689/5822303.pdf
    • http://dnborders.com/uploads/1/3/0/3/130379743/rafubipujij-lafuv.pdf
    • http://tor.money/uploads/1/3/0/2/130270993/juruva_fojumuna_pimerumuzi.pdf
    • http://dealswithdessy.com/uploads/1/3/0/6/130603936/zoledipebexogenale.pdf
    • http://musicalmonday.org/uploads/1/3/0/6/130604730/8750587.pdf
    • http://nesirunaza.funduk.me/uploads/2020/01/28/6987804.pdf
    • http://edtnetworks.com/uploads/1/3/0/5/130539348/1133827.pdf
    • http://kyawomen.com/uploads/1/3/0/6/130639687/wegalaxanod-makafazidobubu-magifevobi.pdf
    • http://andrealynnunger.com/uploads/1/3/0/4/130477048/606219.pdf
    • http://neokundalini.org/uploads/1/3/0/6/130620142/130620142.html#asanas+608+yoga+poses

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012bd.bin
0ae48f7010324534c27608dfcc4b3f54498e6a941b789ed40c50e11ab135522c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BD 8444 bytes

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