Malicious PDF — malware analysis report

Static analysis result for SHA-256 7502985264d514fe…

MALICIOUS

PDF

83.8 KB Created: 2021-03-29 21:54:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 42193bc84297bc45e93a7a8acaef0659 SHA-1: 5b6d03cdd0e72f3bdc007ec9a55a60eeebec083f SHA-256: 7502985264d514fece90055eec576cb9f5bca54a6ab98fbd12c90db6b9684ae3
126 Risk Score

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 0.9970

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://fokemale.ru/award?keyword=admiralty+court+act+2020+bangladesh+pdf PDF link annotation
    • http://mevatupumave.22web.org/o_level_math_past_papers.pdfIn PDF document text
    • http://copyrightnotice-ig.com/bavupavo9v658.pdfIn PDF document text
    • http://japadalifu.22web.org/is_it_illegal_to_have_a_lock_pick_set_in_california.pdfIn PDF document text
    • http://mofazenina.22web.org/pimumi.pdfIn PDF document text
    • http://dutakevekuw.iblogger.org/mas_outsourcing_guidelines_2016.pdfIn PDF document text
    • https://cdn.sqhk.co/wagejino/ftELwir/setevazegezuzoweroje.pdfIn PDF document text
    • https://cdn.sqhk.co/wemegofuk/aifie5F/undertale_genocide_guide_steam.pdfIn PDF document text
    • http://renijulemigato.iblogger.org/attachments_from_multiple_emails_outlook_macro.pdfIn PDF document text
    • https://cdn.sqhk.co/vogoxaginoje/hGXgehe/slither_2006_full_movie_watch_online_free.pdfIn PDF document text
    • http://fijeveg.iblogger.org/camera_shots_and_angles_with_examples.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/Vqfmzhb/povimebetadesap.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • https://cdn.sqhk.co/divoxisig/TV0jb3p/zoom_gestion_de_la_salle_d_attente.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/hjia6gd/icy_hot_spray_near_me.pdfIn PDF document text
    • http://kudretbozaci.com/what_is_the_right_triangle_formulakh25c.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/PhbOnge/rfs_real_flight_simulator_pc_download_free.pdfIn PDF document text
    • http://select-get.top/81142029755wkod5.pdfIn PDF document text
    • http://znakomstva18x.site/lokapelelojipitowifakax7wxev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tewewib.rf.gd/what_does_the_boy_in_the_striped_pajamas_symbolize.pdfIn PDF document text
    • https://729282ec-1290-4cbc-9302-cf8a24acd4c7.filesusr.com/ugd/42c189_196be9e54b7742a5917034eec3326e8d.pdf?index=trueIn PDF document text
    • https://30d6ba4c-d201-4e26-8f31-a0e059b28788.filesusr.com/ugd/f9b8bb_7eb2df1b1a7d412493fdbab6a5c3a66b.pdf?index=trueIn PDF document text
    • http://wozawexopad.epizy.com/mansa_musa_civ_6_guide.pdfIn PDF document text
    • https://a1359116-1358-4cde-afc5-3600b4bb50db.filesusr.com/ugd/3b0c81_05cd9893a402439795976a6b0b05c494.pdf?index=trueIn PDF document text
    • http://jovured.rf.gd/what_is_the_value_of_formal_and_informal_performance_assessment_in_the_workplace.pdfIn PDF document text
    • https://4bf641bf-117a-4913-931f-55e49063997f.filesusr.com/ugd/5befcb_636920f08f69419f9177c32627c56ece.pdf?index=trueIn PDF document text
    • http://duwagisu.epizy.com/hitchhiker_s_guide_to_the_galaxy_book.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_off00010657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10657 6072 bytes
SHA-256: 98d770e272c36cc0bb7cee9f486795b3d4c71333cbeed9e12706496db7773e26
font_01_sfnt_off00011ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AD8 11836 bytes
SHA-256: 8a34f1417855e001eb3afa1f134cae78be39f4710fdf44b7618a7e4456ff2ecc