Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8a75e03fc6f900a…

MALICIOUS

PDF

153.5 KB Authoring application: Pdftk First seen: 2020-09-24
MD5: 54c62212589cc641f2c03ca48459a618 SHA-1: 929463f38d06c617bb689d44d964109ead71e49f SHA-256: a8a75e03fc6f900a12c009fe2c5da1566d47d34d6f71bcab613579c5e52d168d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF that was flagged by ML classifiers and ClamAV as malicious, specifically identified as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. It contains embedded URLs that point to other PDF files, suggesting a phishing or malware distribution scheme. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8963

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://bulverdepregnancy.net/uploads/1/3/0/6/130604243/pewipepotakuvowikoza.pdf PDF link annotation
    • http://milgens.com/uploads/1/3/0/5/130590122/midaruxiwig-gidenamuxe-zakeruxuda.pdfIn PDF document text
    • http://bodysoulhealing.net/uploads/1/3/0/6/130620309/rafodib_rujusubusovez_gibaxa.pdfIn PDF document text
    • http://acouturelife.com/uploads/1/3/0/5/130551144/130551144.html#django+template+csrf+token+valueIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_02_sfnt_off0000a3d3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_02_sfnt_off0000a3d3.bin)
    • http://www.adobe.com/).NotoIn extracted file (stream_005_off0000b99d.bin)
    • http://www.google.com/get/noto/http://www.adobe.com/type/ThisIn extracted file (stream_005_off0000b99d.bin)
    • http://scripts.sil.org/OFLNotoIn extracted file (stream_005_off0000b99d.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_01_sfnt_off00008ef8.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_01_sfnt_off00008ef8.bin)
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn extracted file (font_02_sfnt_off0000a3d3.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000b99d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB99D 130280 bytes
SHA-256: 417335a27b3d600e7b221f55d3475090c3e471367e2a396402c8ee8e5a184dd2
font_00_sfnt_off000010d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1 10112 bytes
SHA-256: 783c5e5f8625190089f2d6b884321ed2f79d965a4ba7ba8a1ffef4183b09c107
font_01_sfnt_off00008ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF8 16204 bytes
SHA-256: f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d
font_02_sfnt_off0000a3d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3D3 2732 bytes
SHA-256: 50224c6c483bfa86a10f62efd7baa2c756f8036c0a911ebd537387e21b2fb6f3