Malicious PDF — malware analysis report

Static analysis result for SHA-256 963d0115be1a3d43…

MALICIOUS

PDF

89.5 KB Created: 2020-12-04 05:12:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a465e38ddf6ff22e81d4f9e7e2bf2a5f SHA-1: 179e73d3860e3dfcd1c63731b5858f06024db98e SHA-256: 963d0115be1a3d4363365017e5085e1f1acff9311adf61619e2c9e44f7840b09
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an embedded external URI pointing to a suspicious domain. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The document body, though partially corrupted, contains text that appears to be a lure for a news report, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://trafffe.ru/aws?utm_term=reportagem+dftv+2+edi%25C3%25A7%25C3%25A3o+hoje PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450042/normal_5fbb3e89215d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368971/normal_5f9dd54f83d6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443619/normal_5fc1066dbb317.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370073/normal_5fab30d7361ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464330/normal_5fa92426b22ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369643/normal_5f89b4b566106.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475571/normal_5fb25d2550222.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/gobalotom.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/65795058572.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/organisational_chart_template_powerpoint_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fae75b2-a041-4cf1-8b15-a88251c667b4/lakiw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f8872cf09257bd6c6ae2/t/5fc97f398d0ac92c7bd7ebcf/1607040828012/game_maker_studio_2_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a3de03c-e097-4327-b03d-14ce5ad463b4/jane_the_virgin_pilot_episode.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/masazuwilije.pdfIn 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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A92 6020 bytes
SHA-256: 0612169260e4c6fad4b4aed07e3b4d5e7ab9dfba254ce16d29c5fa6b30cf0a8f
font_01_sfnt_off00012e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E76 13044 bytes
SHA-256: 4d4d7a227bf1dd280d63676a2cef300b63b92debf8d2fe92d408ee58476ffade