Malicious PDF — malware analysis report

Static analysis result for SHA-256 95201598486c487c…

MALICIOUS

PDF

99.1 KB Created: 2021-02-27 20:51:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: be1a10a3abfaa09f6ae3237a200c629c SHA-1: 8c138dfb81adcb3389d246c3cacc9e465a1ea82a SHA-256: 95201598486c487cdba0e33083dc1f10ce28320ed9ce497dc6724096c2de8ddb
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, disguised as a search result for a scientific topic. This suggests a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect the user to a site hosting further malicious content or to exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/123?utm_term=einstein+theory+of+relativity+explained+simply PDF link annotation
    • http://mexicotop3.xyz/ksp_1._8zxy8a.pdfIn PDF document text
    • http://torchqbfl.fun/cunninghams_encyclopedia_of_magical_herbs_llewellyns_sourcebook_seriesq0uc8.pdfIn PDF document text
    • http://salet.store/battle_realms_3s73z1.pdfIn PDF document text
    • http://trokot-shtorki.online/spelling_practice_games_2nd_grade75u86.pdfIn PDF document text
    • http://prostosite.site/77534481872iq6se.pdfIn PDF document text
    • http://lifegirls.site/70006199162ox7n6.pdfIn PDF document text
    • http://trokot-roznica.xyz/change_spring_framework_version_in_spring_boot_projecttwz67.pdfIn PDF document text
    • http://evakuator-uga.ru/bopejigigoxatotb6.pdfIn PDF document text
    • http://sale20.site/kuxegagsjivp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/1383753026.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/7366239280.pdfIn PDF document text
    • http://jezanijumoz.epizy.com/honey_bee_2._5_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/bubozasuzudokutaliza.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/loz_links_awakening_switch_seashell_locations.pdfIn PDF document text
    • http://xutarefes.epizy.com/multiplying_fractions_problem_solving_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/manualidades_para_nios_halloween.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/homelite_super_2_chainsaw_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/sirikefijenozekox.pdfIn PDF document text
    • http://bizepusozuj.epizy.com/infamous_second_son_hat_trick_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/54904743109.pdfIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/how_to_drain_oil_from_yard_machine_lawn_mower.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/mukezokoje.pdfIn PDF document text
    • http://denakisewir.epizy.com/canadian_visa_application_form_2019.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_off00012c39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C39 5468 bytes
SHA-256: 4708997f8d82d1c7f4d73209ceb2eafd26022a8d56d61e1efed511cbc9561871
font_01_sfnt_off00013ec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EC1 11744 bytes
SHA-256: 66aae1c7604528e22b4fc8033ba9d9a2c919aa4640925b0fac7294f19ae84a3f
font_02_sfnt_off000166cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166CB 16800 bytes
SHA-256: 7f81a40d3f5aca45d40988a51334c3d52f5a303671f7b46bb85abdcee635bd80

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