Malicious PDF — malware analysis report

Static analysis result for SHA-256 7635837f62924b92…

MALICIOUS

PDF

75.5 KB Created: 2021-03-12 17:55:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8710e2ab39fc3b6e6f4be801d3e61fa6 SHA-1: 53b27a2367400fba9a0522085aa9a02c83126e5f SHA-256: 7635837f62924b92434c3905970d7cce1d944c9ff104424f958c61e5d442a898
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://mezovuduw.ru/strik?utm_term=what+combination+of+disney+characters+are+you PDF link annotation
    • https://munowimil.weebly.com/uploads/1/3/1/4/131406650/7313925.pdfIn PDF document text
    • http://bikomowaxibujoj.medianewsonline.com/new_headway_beginner_free.pdfIn PDF document text
    • https://cdn.sqhk.co/dodamewope/TjhhhJM/64242821344.pdfIn PDF document text
    • http://golixudib.mypressonline.com/how_much_is_a_soda_machine_worth.pdfIn PDF document text
    • http://poxumanavofeboz.scienceontheweb.net/dyson_cinetic_big_ball_animal_vacuum_assembly.pdfIn PDF document text
    • https://rinulokol.weebly.com/uploads/1/3/4/8/134868038/0e96c67380.pdfIn PDF document text
    • https://kevititexozasen.weebly.com/uploads/1/3/2/7/132712545/493425.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/eI9Odhg/get_followers_on_instagram_apple.pdfIn PDF document text
    • http://gedawirij.66ghz.com/20262998425.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nujexaraxeb.epizy.com/amapiano_music_videos_mp4.pdfIn PDF document text
    • http://tevufom.epizy.com/38037952240.pdfIn PDF document text
    • http://kixixiwibatogit.epizy.com/free_body_of_lies_full_movie.pdfIn PDF document text
    • http://nitubak.atwebpages.com/20594672057.pdfIn PDF document text
    • http://sinusisokopex.atwebpages.com/husqvarna_450_rancher_aftermarket_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4616e1c0-cc52-4105-9ad3-f80787c3ff34/xosizeporovidubuloz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a9b96bc-f9b2-455b-9cf8-9965290639b1/samsung_un40h5003af_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a221be3-9e16-48c4-b766-55fba47f234d/mubifixudomimipev.pdfIn PDF document text
    • http://katewamopexo.rf.gd/about_teachers_day_information_in_kannada.pdfIn PDF document text
    • http://dapekafuxururo.myartsonline.com/how_to_calculate_offset_bends.pdfIn PDF document text
    • http://gafodix.myartsonline.com/critical_race_theory_in_social_work_practice.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_off0000e9c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C9 5484 bytes
SHA-256: 322d1bf4764831980369a46a112cfbec0ecf6744c99f7cb50aa463c60b729e4d
font_01_sfnt_off0000fc56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC56 10696 bytes
SHA-256: f37fb37ddfc5936ef8282ac1bb607db0f8e54ffdb2749f04e9e786e120e9d870

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