Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea9295ccc4978439…

MALICIOUS

PDF

88.2 KB Created: 2021-04-04 08:19:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1daf71453e920b72b2b25659033a293f SHA-1: 70cc0eae115f234d0125de5993508c0c9554cd50 SHA-256: ea9295ccc49784396ef8423ecb1beb3434088c87d12a7b0507137a22b916e00e
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a fake browser/software-install lure. 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 0.9964

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://kuzutuzo.ru/123?utm_term=k7+antivirus+software++for+laptop PDF link annotation
    • http://reduslimitalia-oficial.site/92680621325iumjc.pdfIn PDF document text
    • https://cdn.sqhk.co/lajagika/V5jgBjb/city_jump_getafe_precio.pdfIn PDF document text
    • http://krokoboko6.xyz/volanimubipumigekososenixvdra9.pdfIn PDF document text
    • http://ekzo-fruit.ru/11760767731hiezt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389358/normal_5fd369fdcd5db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411490/normal_6046632bbff06.pdfIn PDF document text
    • http://kyukty68.xyz/9th_grade_poetry_lesson_plans104c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_605f6dd006be9.pdfIn PDF document text
    • http://spoonnumberone.xyz/best_axial_yeti_xl_upgradesis1rw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427104/normal_6007410714089.pdfIn PDF document text
    • https://cdn.sqhk.co/miwiwefe/gxiihc8/gifuwubisewasizuxerifawi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456398/normal_604cfa3d7c4ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461497/normal_5ff5be5feab03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403533/normal_6063f198a7875.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487197/normal_603bece059c7e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480383/normal_5fef387d3d92f.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/jhgiwcK/flick_kick_football_high_score.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453129/normal_60658e827f0ed.pdfIn PDF document text
    • https://cdn.sqhk.co/fopikudapom/mgiaumI/gseb_application_status.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/towutoginadivu/how_much_is_brandon_routh_worth.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/longrich_products_catalogue_south_africa.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/ge_careers_phone_number.pdfIn PDF document text
    • https://s3.amazonaws.com/gavapozalilup/35485839697.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/inches_to_decimal_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/ffxiv_chocobo_racing_breeding_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/american_pastoral_book.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/zazok.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_off00011dda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DDA 5096 bytes
SHA-256: ff02e959ab0cb2e58ebd6eeeb3eae60f85caac91d082f9e7ab1a597e4501438c
font_01_sfnt_off00012f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F62 10448 bytes
SHA-256: 1bddd5553baab90c8422a99de1cdc64b24c543f1316fcee12df15449060baa30

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