Malicious PDF — malware analysis report

Static analysis result for SHA-256 965b6c78950188a2…

MALICIOUS

PDF

82.8 KB Created: 2021-04-05 15:01:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5ea53a1ee6c30ba97b85dfd0c6c6c95b SHA-1: 845527d1daa6432bb5e5a4ed2c3e2e2f9a6cee0e SHA-256: 965b6c78950188a25a52ad5c0b9801018b0b646878792c0dccaa2ca09c708e65
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 0.9994

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://seumenha.ru/aws?utm_term=real+estate+capital+markets+analyst+salary PDF link annotation
    • http://rofuxipof.mywebcommunity.org/9580837757.pdfIn PDF document text
    • http://juzezudusota.mypressonline.com/igcse_geography_revision_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/busoleva/ggwl30t/high_speed_pinball_mods.pdfIn PDF document text
    • http://voduvalegef.66ghz.com/ross_consulting_club_casebook.pdfIn PDF document text
    • http://melowew.scienceontheweb.net/educational_psychology_books_in_urdu.pdfIn PDF document text
    • http://fuvagezilavez.mygamesonline.org/45169956385.pdfIn PDF document text
    • http://bapatavusirave.mygamesonline.org/how_do_you_reset_an_lg_refrigerator_air_filter.pdfIn PDF document text
    • https://cdn.sqhk.co/zetanitanedo/7xGxgg6/17562239165.pdfIn PDF document text
    • http://nitafibejuze.mygamesonline.org/describing_people_s_personalities_exercises.pdfIn PDF document text
    • http://pusewuvi.medianewsonline.com/tekogekovesofe.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/hdiiSjj/bus_simulator_games_for_pc_play_online_free.pdfIn PDF document text
    • http://lumogodasekepi.mypressonline.com/91832340772.pdfIn PDF document text
    • http://shoop-fh.ru/amazing_wallpapers_iphone_11_proqgln2.pdfIn PDF document text
    • http://shopmzm.site/79493923409nnese.pdfIn PDF document text
    • http://vujuxivawopigu.22web.org/impact_of_autocratic_leadership_style.pdfIn PDF document text
    • http://zugasanuko.getenjoyment.net/9940059827.pdfIn PDF document text
    • http://copyrightsupporthelpcenter.com/tonazudufuwixeposafuvulifik0is.pdfIn PDF document text
    • http://delinapod.mypressonline.com/46685137292.pdfIn PDF document text
    • http://salonly.xyz/risepuzit6ogxb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bufizufidubak.rf.gd/923789318.pdfIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/how_to_use_ge_digital_timer_with_astro.pdfIn PDF document text
    • http://veretupi.epizy.com/naworokimetika.pdfIn PDF document text
    • http://vonanovab.epizy.com/the_complete_ketogenic_diet_for_beginners_free.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_off000104a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A7 5252 bytes
SHA-256: 2171c36cbd267858425a950a0c43fbb461c6c9265024e09916bd6cdd6688e288
font_01_sfnt_off00011680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11680 11548 bytes
SHA-256: cf0a1d8197040be1be8da626fddf4753e064fcc21592008bb432365d296d36d5

Open this report in the interactive analyzer, or submit your own file for analysis.