Malicious PDF — malware analysis report

Static analysis result for SHA-256 3abd95b7b7ee47e3…

MALICIOUS

PDF

69.2 KB Created: 2021-03-07 00:02:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1c81c26e8e9d7565097e80267f252db4 SHA-1: 4c01c8d7220ff318eec1281b53f6c0d6927a994b SHA-256: 3abd95b7b7ee47e3be4d25152f6d5352bd83a2a4217b5194b065d06350b9e1ef
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://druttle.ru/award?keyword=holt+mcdougal+larson+algebra+2+online+book PDF link annotation
    • https://cdn.sqhk.co/joduragenep/Fs1jaGR/45044193378.pdfIn PDF document text
    • https://cdn.sqhk.co/pategazikiw/gg7Id6q/kajanujimulewinidamano.pdfIn PDF document text
    • https://cdn.sqhk.co/buruvalufe/dggEjcQ/dj_mixer_gratis_music_player_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/tabewinudeka/ghrLhgV/48903812243.pdfIn PDF document text
    • https://cdn.sqhk.co/tinipuded/Ad5ieev/34.pdfIn PDF document text
    • https://pawapuso.weebly.com/uploads/1/3/4/3/134312868/256973cdc2.pdfIn PDF document text
    • https://tiposowa.weebly.com/uploads/1/3/1/1/131164246/senek.pdfIn PDF document text
    • https://cdn.sqhk.co/mekibekowufe/LwdZjcn/wonenadufatas.pdfIn PDF document text
    • https://cdn.sqhk.co/bowawugafux/jd93aie/22918729073.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/fonazuzixagizir/73229501079.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/paint_the_town_red_apk_obb.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/52731291142.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/prevention_of_water_pollution.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/venozatabu.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/65327035025.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/animal_sounds_activity_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/tuwemiwexom.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/diagnostic_interview_schedule_dis.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/bejiveronuxen.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_off0000d169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD169 5556 bytes
SHA-256: bef44973ffc79c53d8bc39740101aa1280bea81e85dcaf066c5a142ba1740867
font_01_sfnt_off0000e431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE431 10344 bytes
SHA-256: edaa7bd23773b7c0d8bd95f181b5cd9261859d8241f9263671bf66db509e91bd

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