Malicious PDF — malware analysis report

Static analysis result for SHA-256 93e45c6785902308…

MALICIOUS

PDF

70.3 KB Created: 2021-03-22 20:18:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 7c3069b94100a253352a34af584f3a8e SHA-1: 57c408fe7d759f169036fd0b4674a2c5700b8779 SHA-256: 93e45c678590230859ee8c17ae4d41d6cab938b4f01cbf140098b705c8c46405
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 0.9993

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://xajibur.ru/123?utm_term=best+answer+to+what%2527+s+up+question PDF link annotation
    • http://uaregroup.com/heat_conduction_equation_in_spherical_coordinatesav11u.pdfIn PDF document text
    • http://yozi.store/wiligabihypyd.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxikinanibu/J8r3Ahh/nick_cordero_waitress_movie.pdfIn PDF document text
    • http://ccckkkkk.space/rebogubunisuwnqt1x.pdfIn PDF document text
    • http://kidalozexeneni.iblogger.org/soundcloud_pro_apk_cracked.pdfIn PDF document text
    • http://runolive.com/ffxiv_reverse_engineering_fate54jcw.pdfIn PDF document text
    • http://artistichomesolutions.com/19378203655j0sln.pdfIn PDF document text
    • https://cdn.sqhk.co/mozozezowos/ibPphcy/gutifiroxunage.pdfIn PDF document text
    • http://domainlimax.xyz/swat_team_costume_child530kz.pdfIn PDF document text
    • https://cdn.sqhk.co/salobosemiv/hjbiAhi/ncert_solutions_of_class_9th_science_download.pdfIn PDF document text
    • http://dazefoxezizu.iblogger.org/animal_kingdom_classification_table.pdfIn PDF document text
    • http://onlinekartiadesi.com/how_to_give_yourself_a_professional_teeth_cleaningycrmb.pdfIn PDF document text
    • http://neuroncraft.online/yii2_gii_form_generatorkk7on.pdfIn PDF document text
    • https://cdn.sqhk.co/duloputemab/hinGTlV/swipe_party_add_new_snapchat_friends.pdfIn PDF document text
    • http://sokfresh.fun/358053512396j4lh.pdfIn PDF document text
    • http://korsabarca.com/free_online_reading_worksheets_for_4th_gradedo0wq.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/53e271bb-6e36-4f40-a360-149fcd773999/is_there_an_irish_times_paper_today.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a069358a-9fe9-4cd1-a093-422f4993a231/84826995705.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/nba_live_sport_streaming_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd833286-cdc9-4a87-9c68-ca72b32a1fd8/why_is_online_school_hated.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2ebe999-1dec-4098-8793-7a649e2b4915/25437197742.pdfIn PDF document text
    • https://s3.amazonaws.com/borokegujuzero/how_to_write_a_court_observation_essay.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/tojomupimaviwojuvuf.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_off0000d6d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D6 5176 bytes
SHA-256: f2421da8682ea2916e0d5cde5849e34d7424e6b0c518157e6ed7fddbb5672e20
font_01_sfnt_off0000e88d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88D 10432 bytes
SHA-256: be6a3a299995d8a0006ebc88d58a09f5ba3e4fd37fc0cf3a891555d22fa774a4

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