Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed25daa6a5b99820…

MALICIOUS

PDF

90.2 KB Created: 2021-05-18 20:40:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 501dd188ce3cbc8dc1631d4d07decb89 SHA-1: c5378843dee5b57f599fa7b9809010a3210d2fd3 SHA-256: ed25daa6a5b99820889d2e225e061066ef3fc9246c289c81567e512cbfd0beea
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9989

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://midufefew.ru/strik?utm_term=ideal+devlet+d%25C3%25BCzeninin+olabilece%25C4%259Fini+kabul+eden+g%25C3%25B6r%25C3%25BC%25C5%259Fler PDF link annotation
    • http://xitumuxaditef.iblogger.org/63595262806.pdfIn PDF document text
    • http://zebinoleruf.iblogger.org/america_the_story_of_us_episode_3_summary.pdfIn PDF document text
    • http://guzanarogenuje.iblogger.org/pdf_flip_book_maker_free_download.pdfIn PDF document text
    • https://poxanopa.weebly.com/uploads/1/3/4/3/134380657/mebefover_pisejo.pdfIn PDF document text
    • https://setuwome.weebly.com/uploads/1/3/0/8/130874340/8527432.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/ac6373db-d359-454d-87a4-3b71bcbb3bde/life_fitness_elliptical_x5_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/casio_watch_manual_3239.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/how_to_program_avital_7352l_remote.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/eugene_ionesco_la_cantatrice_chauve.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/40308596814.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/85739869834.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/wiwewomajiro.pdfIn PDF document text
    • http://sasomibaben.rf.gd/cunto_dura_una_infeccion_de_orina_si_no_se_trata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe82973a-e8d2-481b-ad0d-536f873230ad/can_the_public_access_the_sex_offenders_register.pdfIn PDF document text
    • http://nepogewapiw.epizy.com/26954204940.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/nobonutobumusin.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/dejaradiwapixawuzeniwu.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/examples_of_words_formed_by_back_formation.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/446712813.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9491546-e00d-4899-9e88-7b0776101076/vakixamozobe.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/los_angeles_times_sunday_crossword_puzzle_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec0a2a56-422e-4361-ba3a-551e8ee07910/doro_battery_issues.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d52e79ba-d866-4e4d-9926-0e91d29f0666/orion_cooker_cover_home_depot.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/80214600430.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10770 5916 bytes
SHA-256: 1867c9af971a6a553c3ee330856c177d423c8c3c0505959805c0fdc6e50c4a29
font_01_sfnt_off00011ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB9 12624 bytes
SHA-256: 857372d29379c7c496ca3e484fb5b8ee4f36e28f7f2ca153c570ff2da03d69b5
font_02_sfnt_off000141e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141E0 16164 bytes
SHA-256: b289503e5cb288b0550f3e3084c5845f48eca93edc735ac332fe05f8e80c7075

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