Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ceed3abacce2fef…

MALICIOUS

PDF

76.1 KB Created: 2021-03-25 09:56:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a47c122b98e1a0cf4cff16a7b556db3a SHA-1: 8ef0290cff5ac367425e089cf0ba2436d45344ac SHA-256: 1ceed3abacce2fef421876e3e81bcfd736d9c0efca09da44698d80e3eaf66ee0
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://vilenefex.ru/strik?utm_term=tropic+of+cancer+in+hindi+map PDF link annotation
    • https://cdn.sqhk.co/wuzutuse/MigXjhY/gunej.pdfIn PDF document text
    • http://pobasomitiji.22web.org/92794482512.pdfIn PDF document text
    • https://cdn.sqhk.co/wukufazujuv/fii5hjX/koala_kai_actor.pdfIn PDF document text
    • http://tusiteguluvora.getenjoyment.net/how_does_the_education_system_reproduce_social_inequality.pdfIn PDF document text
    • http://zusiwibewire.mypressonline.com/the_adventures_of_huckleberry_finn_sparknotes_chapter_26.pdfIn PDF document text
    • http://delalikifavaru.iblogger.org/muzexizowefeluzuxor.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/XyYkvhe/vr_games_ps4_scary.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dotejujuzobok.rf.gd/how_to_keep_a_lean_body.pdfIn PDF document text
    • http://tizoxojuragato.epizy.com/database_management_system_notes_download.pdfIn PDF document text
    • http://rilimopukalus.rf.gd/fbla_competitive_events_study_guide_2010-_13.pdfIn PDF document text
    • https://08c3cc13-1ce0-4add-927e-a3aed263473e.filesusr.com/ugd/ccf397_aaec24d1cd354835ba980b359cdaad91.pdf?index=trueIn PDF document text
    • https://9b704b87-3668-414c-a24e-b30400fe0e33.filesusr.com/ugd/51c472_06270dd0966f4206ba959f3549e484c9.pdf?index=trueIn PDF document text
    • http://madepadejatutof.onlinewebshop.net/4_convenios_de_ginebra.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4901f3e-c0fe-4d79-8b1f-b2007be01f97/hp_g42_motherboard_price_in_india.pdfIn PDF document text
    • http://sumojoripira.rf.gd/botim_app_for_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46dfe696-6df5-473e-bda0-28c343114145/ap_calculus_ab_2017_multiple_choice_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84487cd4-8da2-4656-b1ed-41a8f94ce493/think_bayes_bayesian_statistics_in_python.pdfIn PDF document text
    • http://rexidedefupu.epizy.com/73834552606.pdfIn PDF document text
    • http://jewikotadukusug.rf.gd/a_suitable_boy_netflix_release_date_india.pdfIn PDF document text
    • https://c78267de-509c-4cb0-9394-6b21b7876e04.filesusr.com/ugd/290ce3_1925f20d40ee47fa9083f85de0ad3980.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4c3deaf-e225-4f31-9580-03114ed9c630/dukomeduvenaramex.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_off0000e988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE988 5136 bytes
SHA-256: 1544c69e10968391133b441af3f5ca96958ae0fd48db9544fa292e57e12bb98c
font_01_sfnt_off0000fad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD3 12148 bytes
SHA-256: 1e33fa801213cdad0a8ad2de0458c2a59adb0d5cd4a9f7c058b15e2bee4cacd8

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