Malicious PDF — malware analysis report

Static analysis result for SHA-256 356daf93713a8a5a…

MALICIOUS

PDF

79.0 KB Created: 2021-03-17 11:04:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 24f84883501558c9a3d001073b46ab77 SHA-1: 7afe43e022b8c72315054441983e94dc3cb83451 SHA-256: 356daf93713a8a5aed11a847052cbc9668a11db0d857affabc32b99f2b90ce68
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://druttle.ru/wix?keyword=skyrim+better+vampires+no+vampiric+drain PDF link annotation
    • https://jajixawu.weebly.com/uploads/1/3/5/9/135992574/4146f25ac2db.pdfIn PDF document text
    • https://jatilupek.weebly.com/uploads/1/3/4/4/134491857/a0fb61dfc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421330/normal_603d0e3848ef0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404965/normal_604ad94fb56bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406166/normal_5fd7bfb990ed5.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/race_in_america_matthew_desmond.pdfIn PDF document text
    • http://otomail.business/7485320736ea6ah.pdfIn PDF document text
    • https://boleturem.weebly.com/uploads/1/3/4/3/134398498/3711263.pdfIn PDF document text
    • http://myluckywin.site/sufuges24f9.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/welcome_to_the_dollhouse_movie_ratings.pdfIn PDF document text
    • http://sagedix.medianewsonline.com/apatani_language.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/sutawowirosuvuv/plague_inc_evolved_nano_virus_normal_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/30864730164.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/how_to_increase_phonemic_awareness_in_the_classroom.pdfIn PDF document text
    • http://donijexufenu.onlinewebshop.net/xuzebudagumajanofapepiw.pdfIn PDF document text
    • http://bipegokatif.onlinewebshop.net/pdf_to_coreldraw_converter_online_free_download.pdfIn PDF document text
    • http://gudugapapilile.atwebpages.com/4828472886.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/brightly_beams_sheet_music.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_off0000f4e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E5 5656 bytes
SHA-256: 11940f972ab9bd6869d6a5cf2f52fecbe0c5c127b3aeb6f4a6a57519d329768f
font_01_sfnt_off00010812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10812 11516 bytes
SHA-256: e43cb04818caeaf2f8fec4a99592855db9ee28f345a93795434a99e5f9d7d708

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