Malicious PDF — malware analysis report

Static analysis result for SHA-256 7821136eba33b763…

MALICIOUS

PDF

481.2 KB Created: 2022-02-01 01:36:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: 4c24d96592c85cad37b355829c363441 SHA-1: db1933518785a75f1e62d0cbc58b0cc412f2d285 SHA-256: 7821136eba33b763b67d1b9f575bc4a5afd5d6c7aa6fae6744f975aa0df6241d
144 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4051

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
  • 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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://lazav.co.za/XSRYdR1H?utm_term=gwent+deck+guides PDF link annotation
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/7e956823b9fad219e92604a1296f3cb4/81093277001.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/71562126189.pdfIn PDF document text
    • https://poolpoint.be/uploads/file/26339720122.pdfIn PDF document text
    • http://kindergartenhelden.at/upload/file/nudeluxuriminon.pdfIn PDF document text
    • http://ryyw.com/upload/files/2021/10/202110150706438182.pdfIn PDF document text
    • http://naphotelbangkok.com/userfiles/files/71865617841.pdfIn PDF document text
    • http://contua.org/userfiles/file/78966138896.pdfIn PDF document text
    • https://baohohoanglong.com/userfiles/file/27518435425.pdfIn PDF document text
    • https://www.kindspring.org/inc/ckfinder/userfiles/files/53033707013.pdfIn PDF document text
    • https://digireg.gr/upload/jogopivigoxare.pdfIn PDF document text
    • http://dianacb.cz/userfiles/file/wufajel.pdfIn PDF document text
    • http://creacionesfullpack.com/kcfinder/upload/files/xosadifuzono.pdfIn PDF document text
    • https://tenfci.net/userfiles/file/tujabuxa.pdfIn PDF document text
    • https://nasikampung.info/contents/files/xolovigavisobaz.pdfIn PDF document text
    • http://ranfeng.com/userfiles/file/2021-11///20211111222776389.pdfIn PDF document text
    • http://racecross.com/upload/edito_fckeditor/file/goxikadamujas.pdfIn PDF document text
    • https://aqua2go.pl/galeria/file/zemuvetigadigal.pdfIn PDF document text
    • http://maryalo.com/userData/board/file/6778193358.pdfIn PDF document text
    • https://muahohangnhat.com/app/webroot/uploads/files/mexowerogilaribebajekuv.pdfIn PDF document text
    • http://michalpavlicek.com/uploaded/file/21212387705.pdfIn PDF document text
    • http://ancient-theater.gr/media/file/65625287019.pdfIn PDF document text
    • http://thermcom.cz/userfiles/file/difapuwumunon.pdfIn PDF document text
    • http://bwemfjhjk.friend-match.com/upload/files/208148728.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/bfcaf30089decd20a99ea9237b2a3103/13313183778.pdfIn PDF document text
    • http://scard.vn/app/webroot/uploads/files/12596303921.pdfIn PDF document text
    • http://yomamasushitogo.com/uploads/files/7232281163.pdfIn PDF document text
    • http://dalnoboy.net/data/filestorage/upload/files/7933980257.pdfIn PDF document text
    • http://uniradioweb.info/userfiles/files/92881017689.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b32b5bd7958---56521526462.pdfIn PDF document text
    • http://archidaldegan.eu/userfiles/files/64524944738.pdfIn PDF document text
    • http://aktifmedya.com/dosyalar/files/36218935079.pdfIn PDF document text
    • https://luquluqu.org/public/assets/js/kcfinder/upload/files/43903182866.pdfIn PDF document text
    • https://wspaperbag.com/userfiles/file/miwudixifanom.pdfIn PDF document text
    • http://www.smwiarus.pl/ckfinder/userfiles/files/14773346024.pdfIn PDF document text
    • http://shangyi-pump.com/uploads/file/202102247520.pdfIn PDF document text
    • http://www.companyforte.com/imagenes/editor/file/wejosaloto.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/a86epv1qdr44pe2griqveenkkf/57933582492.pdfIn PDF document text
    • http://posekatzahradu.cz/files/file/25739653275.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00071995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71995 17168 bytes
SHA-256: 1209336fd33a582d925530f823a0db819dc9f619af115fd60e2c83ba36da008f
font_01_sfnt_off0007466a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7466A 10436 bytes
SHA-256: d0869ca404cb5f4cd1dee71f6ce7db258b9abce9837eb1fe064c553265c1f3be
font_02_sfnt_off00075e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E16 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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