Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3a46866a97a716c…

MALICIOUS

PDF

71.7 KB Created: 2021-03-23 01:13:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0f0d4d15aeda4caebde56ff4d7a33ee3 SHA-1: 9eb0fe98a757454c22790ca2d6ca36007d1428e1 SHA-256: e3a46866a97a716c4029f96b680560aa4a94b2520f6ec6457cf16ec790bca99c
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 0.9996

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://jacksth.ru/wix?keyword=area+of+right+angled+triangle+worksheet PDF link annotation
    • http://dombitarf.ru/how_do_i_stop_my_kidde_smoke_and_carbon_monoxide_alarm_from_beeping3yokp.pdfIn PDF document text
    • http://pagavopalubutu.scienceontheweb.net/23472073309.pdfIn PDF document text
    • http://agreevudb.rest/el_lazarillo_de_tormes_tratado_1_la_venganza_analisiswei8w.pdfIn PDF document text
    • http://vnds-v.website/beat_maker_apk60ojg.pdfIn PDF document text
    • http://alcexpress3.xyz/newubobosuoxmeu.pdfIn PDF document text
    • http://ogranicbio.fun/free_printable_happy_mothers_day_coloring_sheets7xv36.pdfIn PDF document text
    • http://birjand.design/8199657174834tmf.pdfIn PDF document text
    • http://metazoaapc.fun/fegawuzadew9ph5.pdfIn PDF document text
    • http://getliterate.online/fagopuxovixogefavulafidahurbn.pdfIn PDF document text
    • http://unreguezff.rest/paypal_stock_quotepob68.pdfIn PDF document text
    • http://form-lnstagramcopyrightservices.com/how_did_the_industrial_revolution_affect_europewh3km.pdfIn PDF document text
    • http://tgesheff.xyz/19558713851o89kz.pdfIn PDF document text
    • http://lusolakidareve.mywebcommunity.org/6883369916.pdfIn PDF document text
    • http://evgeniy-semenenko.ru/jio_video_call_app_pleaseupqah.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/a210ca6f-b5a5-473e-b690-5322955f20fd/moultrie_s50i_game_camera_reviews.pdfIn PDF document text
    • http://seluxud.epizy.com/chamma_chamma_old_song_video.pdfIn PDF document text
    • http://sulojigemijat.rf.gd/business_english_worksheets_for_beginners.pdfIn PDF document text
    • http://najefitisefema.epizy.com/rifuvim.pdfIn PDF document text
    • http://werowelunan.epizy.com/wagowim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d94a7c66-3ca9-4d13-80f6-ac106e6cf8cf/jiwozufiwejivupavibuzov.pdfIn PDF document text
    • http://kotalozobazad.rf.gd/joint_venture_agreement_sample.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f10f9b15-8050-4ba9-9eeb-04d009660ab8/obituary_common_sense_printed_london_times.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_off0000d98e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98E 5316 bytes
SHA-256: a78bc7cf62404ac0c25145fccf46992d81317f2ee651ad9f4422ce8f4337031f
font_01_sfnt_off0000ebae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAE 11036 bytes
SHA-256: 6239f4409496cfbc4295d59ac1ea02778de0555e60001fecb137ab4f768e2612

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