Malicious PDF — malware analysis report

Static analysis result for SHA-256 84dc0fa359ae688d…

MALICIOUS

PDF

72.8 KB Created: 2021-02-20 15:59:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 28fc99e718a75355669eff7d2b370f08 SHA-1: 1ae71d70cb31aac5b599afd472e517adf7b97095 SHA-256: 84dc0fa359ae688daf7eb5f49b3af706b79aaa53d0d015b8a55b568f86d6c0ae
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jacksth.ru/wix?keyword=farberware+6+qt+pressure+cooker+recipes PDF link annotation
    • https://cdn.sqhk.co/givikufat/jdjehaF/kazelafozopugulefedu.pdfIn PDF document text
    • https://zofawuzi.weebly.com/uploads/1/3/5/3/135323082/dabevuma.pdfIn PDF document text
    • https://xateboduf.weebly.com/uploads/1/3/1/4/131483383/77a03.pdfIn PDF document text
    • https://cdn.sqhk.co/vujixete/ibTIgj4/wordpress_login_page_url_change.pdfIn PDF document text
    • https://gerugufudob.weebly.com/uploads/1/3/4/8/134869234/4201917.pdfIn PDF document text
    • https://cdn.sqhk.co/wememiguw/hjgdCRJ/jofevirewumeka.pdfIn PDF document text
    • https://cdn.sqhk.co/xajamenujo/egekgev/what_does_reversing_roe_v_wade_mean.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/dedinavesute/ledebo.pdfIn PDF document text
    • http://kugikejovapav.rf.gd/74481858369.pdfIn PDF document text
    • http://nenedabex.rf.gd/autocad_2014_crack_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/us_guided_needle_biopsy_breast.pdfIn PDF document text
    • http://zizizezuk.epizy.com/49306337969.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/acrobat_reader_free_win_7.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/los_angeles_times_homicide_report_2018.pdfIn PDF document text
    • http://lexaxadodazab.rf.gd/kenya_population_census_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/transform_botchling_into_lubberkin.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/83726392944.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/uc_browser_full_exe.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/wazanububajipuxix.pdfIn PDF document text
    • http://fesamemosonug.rf.gd/56746852231.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/plane_games_for_laptop_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_off0000e07d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE07D 5428 bytes
SHA-256: 4a7f4edc5e88079ff12307270e5481229a254cd3d333041332beb85cf9e0262d
font_01_sfnt_off0000f31c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31C 10024 bytes
SHA-256: 14c0ac6b949a3702a9695d34e2690297d7e36a81e1250aea8a9a3cf785bb2205

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