Malicious PDF — malware analysis report

Static analysis result for SHA-256 2738e6896cbcd490…

MALICIOUS

PDF

45.2 KB Authoring application: Scribus First seen: 2020-09-24
MD5: 951f20f803d0ad1cdb68a9002192929b SHA-1: dfe50ec4be4cb2de04141033f1532a5378fa3847 SHA-256: 2738e6896cbcd49010288389719df1d25b9de090a128b66ca1abac205a79ce6e
152 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a malicious intent to redirect users to potentially harmful websites. The ClamAV detection further supports its malicious nature, classifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://kellypritchardhair.com/uploads/1/3/0/5/130589460/babes.pdf In PDF document text
    • http://agm75.icu/uploads/2020/01/28/549322e9897746.pdfIn PDF document text
    • http://roofingcalgary.org/uploads/1/3/0/3/130313306/rumuloto-bimumikoka.pdfIn PDF document text
    • http://nuobeijinghotel-chinese.devsite-1.com/uploads/1/3/0/7/130738564/130738564.html#household+waste+management+project+pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.adobe.com/).NotoIn PDF document text
    • http://www.google.com/get/noto/http://www.adobe.com/type/ThisIn PDF document text
    • http://scripts.sil.org/OFLNotoIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5 8468 bytes
SHA-256: 68103ba9ef25db314763b2be5cd74fbc608b5daa7b485dece5880936b88cc9a0
font_01_sfnt_off0000691a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x691A 4276 bytes
SHA-256: 7207827e235d18ee557c12922f134d3b85c1e590492d74bc1beadd57b550878e
font_02_sfnt_off000075fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75FA 2652 bytes
SHA-256: e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea