Malicious PDF — malware analysis report

Static analysis result for SHA-256 45ebd543d80f8cc6…

MALICIOUS

PDF

76.3 KB Created: 2020-11-19 02:07:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d6c0d27e0591357579af61ab9e184838 SHA-1: 200ca9adab8fad70f4b63443e7be2092aad94604 SHA-256: 45ebd543d80f8cc6baf8c56a33ec0666fc166dd030cb328ffd6520a17c3c7684
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffset.ru/123?utm_term=periodic+table+and+electron+configuration+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407318/normal_5f9ccea75961f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370265/normal_5fab8a6100330.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366348/normal_5fa219a69ebf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383795/normal_5fa99b968b7bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367903/normal_5f8e05104d97b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415526/normal_5f953c6378339.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401545/normal_5f9adfb8e9b8b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/661b4a5b-5ca6-49c0-bcda-63826829ec3e/facebook_blueprint_exam_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/tesla_stock_stocktwits.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/pandora_s_box_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05b17ced-e9cc-4b05-9a5b-eeebefe87ad0/86767630659.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/cookie_clicker_hacked_game_save.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db9229d3-19b4-442d-a108-9e154e1b6c77/fetamimabijaligegij.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_off0000eceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEB 5580 bytes
SHA-256: 4b6525427d0fe463d162a07795ddafff90be6086c1d66b26547f7218c8b901f7
font_01_sfnt_off0000ffef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEF 10608 bytes
SHA-256: a12f003e5bbd34ba7f138eff93bab07987f95722a5b93f8a00b9528b14495828

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