Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b341113b364d4ff…

MALICIOUS

PDF

67.5 KB Created: 2021-02-20 02:44:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f6130142703c0c98940854e523e0af8d SHA-1: 5c7551436db30433b46e595c76947a7cacd22780 SHA-256: 8b341113b364d4ff36b5cfabda0447ba341362f3930387a0efe76e44be8f2a84
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=graphing+absolute+value+functions+worksheet+rpdp+answer+key PDF link annotation
    • https://tewamuwomipatus.weebly.com/uploads/1/3/0/9/130969874/terojanikixib_vipetodaxesut_ralonu.pdfIn PDF document text
    • https://vaxatimiroxak.weebly.com/uploads/1/3/4/6/134617636/sewodamovitimik_gaxadozomeloxip_gezosovofimoli.pdfIn PDF document text
    • http://nesobaka3.xyz/the_beatles_complete_chord_songbook3i2kf.pdfIn PDF document text
    • https://susutabum.weebly.com/uploads/1/3/4/4/134464128/josawogilubofame.pdfIn PDF document text
    • http://axecheat7.xyz/coffee_roasting_guide_book6cci0.pdfIn PDF document text
    • http://detonic-deutschland.website/30388759961afz49.pdfIn PDF document text
    • http://mailedflkf.site/niniwazuxomigitimflm.pdfIn PDF document text
    • https://vulabomanuxuw.weebly.com/uploads/1/3/4/8/134857085/9350254.pdfIn PDF document text
    • https://wivixape.weebly.com/uploads/1/3/4/8/134897282/wilapavuxuwimedoto.pdfIn PDF document text
    • https://zikawudewodag.weebly.com/uploads/1/3/4/5/134585044/1351532.pdfIn PDF document text
    • https://zifusiwi.weebly.com/uploads/1/3/4/6/134686012/jaxazetiwajusetag.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/sewamos/kaxuxivogo.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/46837578877.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/free_online_converter_to_jpg.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/21986319645.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/74317132589.pdfIn PDF document text
    • http://minirulo.epizy.com/8980866323.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/vobopugevabazisotanumo.pdfIn PDF document text
    • http://tumofif.rf.gd/ordinary_level_mathematics_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/julikagoxuxuduvubabil.pdfIn PDF document text
    • http://gevitejivojo.rf.gd/dmv_drivers_license_written_test_answers.pdfIn PDF document text
    • http://wabalegawamiraj.rf.gd/72641220495.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_off0000ca82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA82 5904 bytes
SHA-256: 56eec34f8d943d55cf974ee90c0383cea9d7475724114a9310e2cd824cda5717
font_01_sfnt_off0000deac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAC 9788 bytes
SHA-256: 009b0dc10e91ec1e922526d1b7c12d2735d0606dfa91ec09b85febd0ae9147e1

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