PDF static analysis report

Static analysis result for SHA-256 deb1df5cbe631722…

SUSPICIOUS

PDF

35.4 KB Created: 2020-04-10 23:17:45 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: b6c28f77c70161f071a09e36a9c733f8 SHA-1: 6c081aa69ce4215c315af9aaf9824d82b77ab0e5 SHA-256: deb1df5cbe631722ce8d3e2a1eeb673c5121c60a0f1876cfa5c16b6bef01e3de
36 Risk Score

Malware Insights

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

The ML classifier strongly flagged this PDF as malicious. The document body and embedded URLs suggest a lure, presenting itself as a worksheet to entice users to click on malicious links. Several unknown reputation URLs were extracted, indicating potential download or redirection points for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 3

  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://rochecenter.org/uploads/1/3/1/1/131163691/131163691.html#properties+of+quadrilaterals+workshe PDF link annotation
    • http://equalinchrist.org/uploads/1/3/1/4/131438177/xewodop.pdfIn PDF document text
    • http://litwinspections.com/uploads/1/3/0/6/130639636/pidixeputazax_xaxepopo_vipapi.pdfIn PDF document text
    • http://sisterhoodbirth.com/uploads/1/3/0/8/130874030/vavumovedax_vavipakoviruve_wiselavolozud.pdfIn PDF document text
    • http://tried-by-fire.com/uploads/1/3/0/5/130588220/zaguwuradibozig_fipozinesolo_sojidajivavoror.pdfIn PDF document text
    • http://ronanthebarbarian.com/uploads/1/3/0/3/130323322/sijujirukope.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000592c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x592C 8064 bytes
SHA-256: fc8db83ca8aff189b6a4fb6da178624630e4a93a3161a12b737ab332e97fe6d7
font_01_sfnt_off0000784b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x784B 2652 bytes
SHA-256: e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea