Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d2d006a400b5d83…

MALICIOUS

PDF

77.6 KB Created: 2020-11-21 07:23:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9d6aba2b051b406f030963546c2163f4 SHA-1: 9ba1226164a8360e4a136f30cc92bc40ee48bd42 SHA-256: 8d2d006a400b5d83a8fe89b467d3984c6512bbc7093644bc60e5db6c19015cbb
104 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 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
  • 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
  • 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://trafficel.ru/aws?utm_term=some+basic+concepts+of+chemistry+ppt PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420764/normal_5f9b0aa99da2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447915/normal_5fab833f6e1c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368772/normal_5f93f91bb1e61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391015/normal_5f91add12621a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413475/normal_5f9b6963429c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458614/normal_5fa4b5377faaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373504/normal_5f94d98ddb996.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499282/normal_5fb2f3ed5778e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/77a7fe79-0ecb-4175-b320-490acb612b9d/6676082553.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/social_contract_theory_ap_gov.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/arjun_reddy_bgm_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/cv_boot_clamp_tool_for_polaris.pdfIn PDF document text
    • https://s3.amazonaws.com/naramuro/jordan_peterson_book.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiwovowus/dudutupe.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/javatopitejurij.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/xomitubumelinat.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE253 5356 bytes
SHA-256: 0e3147e71b22ebd6acfda6cac0d3b93ff9daa95f547bc0da4d4ef9037422b5cd
font_01_sfnt_off0000f44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44B 11428 bytes
SHA-256: 6bb3d3a3084507b760cf95a0ac68219b0cab88ce9cdb9f038e152e5ea1be16df
font_02_sfnt_off00011aa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA0 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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