Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a25ea21875a4c9d…

MALICIOUS

PDF

69.6 KB Created: 2021-01-27 01:30:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 466a46c1c42d6d89c9bba8698e39a817 SHA-1: cec5ff9a18b8687f0c233d1538330bd9aa41cadd SHA-256: 1a25ea21875a4c9d9e4c2e9c2a98c73b0048ad35c3194f0442639ad714194b8a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wb?keyword=super%20smash%20bros%20melee%20gamecube%20rom%20europe PDF link annotation
    • http://pajugurujuvavux.22web.org/the_cask_of_amontillado.pdfIn PDF document text
    • https://cdn.sqhk.co/wibepudib/5jaPGhj/tabletop_fountain_replacement_pump_with_light.pdfIn PDF document text
    • https://cdn.sqhk.co/barugogip/lLIiaif/netflix_login_change_password.pdfIn PDF document text
    • http://wagagawoduzom.iblogger.org/zuduvawan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450151/normal_5fe8b32509bb4.pdfIn PDF document text
    • https://toxoladosa.weebly.com/uploads/1/3/4/4/134479392/3012929.pdfIn PDF document text
    • https://vejanozamafiz.weebly.com/uploads/1/3/5/3/135351199/bokipanuperufiliz.pdfIn PDF document text
    • https://cdn.sqhk.co/janonaset/0jiiyhi/sound_meter_app_windows.pdfIn PDF document text
    • https://nosovaranipad.weebly.com/uploads/1/3/4/7/134743093/ralikakofodawo.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/kuxuxemu/jodimadaronagotifekob.pdfIn PDF document text
    • http://momugegunimex.rf.gd/united_center_guided_tours.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/ifrs_16_lease_accounting_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/nice_guidelines_definition_of_self_harm.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/cats_the_musical_script.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/ropagenenunoda.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/74033577153.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/how_to_creative_cloud_desktop_app.pdfIn PDF document text
    • http://fonajuwowo.epizy.com/james_bond_theme_music_piano_sheet.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_off0000d268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD268 5592 bytes
SHA-256: df584d2029dd86bcfbf31e7f6ca5670ca53d8dac1fb241a49a3d0c6187e6f4fb
font_01_sfnt_off0000e537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE537 10632 bytes
SHA-256: 6b89ad5938e896821dc57687172939434a75c7f68d8a825876081d07f4cb1b35