Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cda0d602afa4bed…

MALICIOUS

PDF

65.2 KB Created: 2020-11-23 16:42:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e6fadfb325a791d64b128ebc5a83ee9f SHA-1: df2d4049e6d46e8d73ebc024a48a5e1a51b4ea7b SHA-256: 8cda0d602afa4bed7978b9a0d992dbb3bd8253461e4fd58ef4f2f09defff4e98
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://ggtraff.ru/123?utm_term=supersu+me+pro+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f86faa49045f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375909/normal_5fa5e6b42d2c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382420/normal_5f958d13e2dda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417312/normal_5f967dcba83ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413121/normal_5fa2147493d0e.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/mogipegi/extent_reports_maven_repository.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b3a1aed-b8c8-4e60-be2f-c377fb6af36f/83249399673.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fef5c476-a6eb-4ffd-97c6-2dfda18f4f7a/74672005113.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/atoms_and_molecules_class_9_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff7c3622-033f-4e44-9905-fc1b487ee374/barcelona_pavilion_design_concept.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12962c97-4531-41af-be27-0ee018cd74d6/15652234811.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efc58872-7142-4a14-85f9-aaa71e68a834/mujusumofodaso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44db64f6-450c-4f6d-ae58-e7b6bcce8073/76522962373.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95c0ba8b-2a70-4ad0-8e53-6cbc286f81a4/wirebir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e069338-da6f-4d6b-bd34-9914770c41b5/37901258494.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_off0000c22d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC22D 5100 bytes
SHA-256: 9d5f15bbc6b9ef26b83be2b115b05a3afa47ea21c9758f198dc9522353e7ad63
font_01_sfnt_off0000d36d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD36D 10784 bytes
SHA-256: be31aaf14e062461073947035400525a33bdf2408e331ef19a063e655ad9c792

Open this report in the interactive analyzer, or submit your own file for analysis.