Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e4c3e839587c591…

MALICIOUS

PDF

74.7 KB Created: 2021-03-20 23:34:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3c41c06edffae2f8ee63a397d6f0167e SHA-1: 9aed3aa784413f6cda4edb56fc854c5ed35470a9 SHA-256: 6e4c3e839587c591e6a1338a0fd79241fe5813d76418edb28b8c1cc6ceb3c05c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://zajinet.ru/aws?utm_term=used+go+go+scooter+for+sale PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4454289/normal_5ffc689f8a6e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479921/normal_600287886fc2e.pdfIn PDF document text
    • https://cdn.sqhk.co/nuduniguwufo/gWTAZgd/bubble_shooter_legend_apk_mod.pdfIn PDF document text
    • http://kigurumi.org/hp_officejet_h470_ink_service_module_replacef7n2v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454299/normal_5feb9f9f28ffd.pdfIn PDF document text
    • http://converstarget.ru/adobe_premiere_text_animation_templatesu46ph.pdfIn PDF document text
    • http://stickerrus.ru/art_since_1900_foster2r360.pdfIn PDF document text
    • https://cdn.sqhk.co/tegatiwuwax/AhjdFjg/blaze_and_the_monster_machines_full_episodes.pdfIn PDF document text
    • http://strita.space/fishdom_game_reviewsphsyt.pdfIn PDF document text
    • https://cdn.sqhk.co/bafebolabefo/Yjgieid/business_process_review_document_template.pdfIn PDF document text
    • http://jobware.pro/how_many_kwh_is_a_tesla_model_3_batteryg5d89.pdfIn PDF document text
    • http://tufataf.22web.org/42450501448.pdfIn PDF document text
    • http://pay-order.info/93220757750jorv0.pdfIn PDF document text
    • http://lisipezasuk.iblogger.org/kaxexilijaz.pdfIn PDF document text
    • https://cdn.sqhk.co/bularalunop/jaGDHoN/strategic_marketing_plan_outline_template.pdfIn PDF document text
    • http://mbfsopg.com/how_to_open_maytag_maxima_washer43msj.pdfIn PDF document text
    • http://my-favshopd.online/basic_electrical_and_electronics_engineering_books_free_downloadznqh6.pdfIn PDF document text
    • https://cdn.sqhk.co/xolofiwano/aggjdij/3d_printer_pen_price_in_pakistan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://moliwofasekimu.epizy.com/81337753355.pdfIn PDF document text
    • http://worudaparupun.epizy.com/isomerism_class_12.pdfIn PDF document text
    • http://vofabij.epizy.com/nimh_battery_care_rc.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE867 5180 bytes
SHA-256: aac328eb78c8078e9d12f63bd83b4b195ae661396f179b8e7ffda2d5bb8389a5
font_01_sfnt_off0000fa1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA1B 10420 bytes
SHA-256: acf177c5dc9a990287f6da6caa7a519c01be6d4e0c757892de8ee10f0b0c4c3f

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