Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7e7999e57a7e842…

MALICIOUS

PDF

79.2 KB Created: 2021-03-22 03:10:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 49fabe4726d877cf95fcc16f7829c74e SHA-1: 8844979eeb862a0253ff4081a3ba79dd8d8f593f SHA-256: e7e7999e57a7e842420cd34a337f4f9547b03495d9758d12709cce585cf5d82d
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 0.9964

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://crophysi.ru/strik?utm_term=how+old+should+you+be+to+read+the+selection+series PDF link annotation
    • http://abwaab.su/627040333176gx1t.pdfIn PDF document text
    • http://paganel.world/100_tamil_movie_free_tamilrockers_20194jnho.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzefoveniri/1gizOig/geguxom.pdfIn PDF document text
    • https://cdn.sqhk.co/nivurerazusa/8Vwrict/level_6_army_camp_clash_of_clans.pdfIn PDF document text
    • http://linawoninup.22web.org/gladesville_restaurants_dining_guide.pdfIn PDF document text
    • http://flipping-car.online/tajawijizewironizx7iz.pdfIn PDF document text
    • http://astropsychology.website/35943572912fco6b.pdfIn PDF document text
    • https://cdn.sqhk.co/xasomegupur/giigggh/kovupawasanesub.pdfIn PDF document text
    • http://jerusitujuj.22web.org/business_english_texts_for_reading.pdfIn PDF document text
    • http://zesamoa.online/the_fisherman_and_the_genie_question_answersgfjsu.pdfIn PDF document text
    • http://vofovadero.22web.org/app_to_annotate_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sosirowop.epizy.com/business_mathematics_multiple_choice_questions_and_answers.pdfIn PDF document text
    • http://nogosos.epizy.com/amazing_english_1_student_s_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63f2c465-d7cc-49e5-a310-452775fd0497/38715080997.pdfIn PDF document text
    • http://jagazasa.epizy.com/noun_phrase_worksheet_with_answers.pdfIn PDF document text
    • http://tavopaku.rf.gd/22929900725.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b4621b1-2ee7-4e7f-a947-4887ce35363b/2005_nissan_murano_sl_fwd.pdfIn PDF document text
    • http://nonulalomijowo.epizy.com/nipexofojasidobubo.pdfIn PDF document text
    • http://xejimeve.rf.gd/likusimiruvut.pdfIn PDF document text
    • http://lununobasafino.rf.gd/52730669559.pdfIn PDF document text
    • http://sijozorugepidu.epizy.com/15724352561.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2dd0d49-f34a-49e9-a0e1-492401c375c5/what_is_the_normal_temperature_setting_for_a_tankless_hot_water_heater.pdfIn PDF document text
    • http://bumitenebisi.epizy.com/28156216901.pdfIn PDF document text
    • http://sudiwoke.epizy.com/61042171187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e8cb0de-184e-41c3-bd74-26ac42da0ace/niveduvofovofujobevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/754c54c5-1431-4013-90fa-e62340479492/fuxufoxakufokulukosine.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_off0000f5a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A3 5324 bytes
SHA-256: 6a36abaa33e1de6fb4e10cdef3bce4f8d8d70ba599d3078a6bc24da5010198fb
font_01_sfnt_off000107c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C3 11040 bytes
SHA-256: 2eee0d8dcd301a9e8ac6a72a994517d5b3453ab3196d883411c9dfcb92ecef6a

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