Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa838c5006597c5a…

MALICIOUS

PDF

257.9 KB Created: 2022-02-04 10:42:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: c877ae3bcb268f6b3ae612914631e0d5 SHA-1: 11a393999e20d4a9468d6de8537f43ca55c760c2 SHA-256: aa838c5006597c5ab20628ffc3e2052e5a64693f0e3f090569ef508de3f240af
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7039

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
  • 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.
  • 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://sunuf.co.za/XSRYdR1H?utm_term=backup+android+contacts+to+outlook PDF link annotation
    • http://fajni3333.fun4two.pl/uploads/assets/file/tukotegasi.pdfIn PDF document text
    • http://xn----7sbjvweekof5d.xn--p1ai/files/files/siferixabaxedaxe.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/jixofirotoropoj.pdfIn PDF document text
    • http://csm-membrans.ru/app/webroot/upload/files/69701642348.pdfIn PDF document text
    • http://dalnoboy.org/data/filestorage/upload/files/83806872086.pdfIn PDF document text
    • http://preprod-proximeo.com/ckfinder/userfiles/files/99685221715.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ff7d3f506c8---vidofipegudilorazutawe.pdfIn PDF document text
    • http://textstricker.de/benutzerdateien/52396578203.pdfIn PDF document text
    • http://kme-kme.cz/files/file/21034137278.pdfIn PDF document text
    • http://sm.ac.th/ckfinder/userfiles/files/lewix.pdfIn PDF document text
    • http://stavebni-firma.sarmo.cz/Images/file/marijalifiwuvadetalutoji.pdfIn PDF document text
    • http://benthanhsgfarm.net/images/uploads/files/2541389358.pdfIn PDF document text
    • http://salukool.ee/upload/userfiles/file/31915911348.pdfIn PDF document text
    • http://ipai-bg.eu/img/file/88288888001.pdfIn PDF document text
    • http://kondicionery-lobnya.ru/upload_picture/file/sojulifal.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/60c9a2bfc6843de86c196c96ffdc906b/xevilim.pdfIn PDF document text
    • http://herningbadintra.dk/app/webroot/upload/files/62954331418.pdfIn PDF document text
    • http://radecznica.pl/userfiles/file/dolisowobuwatikezabotu.pdfIn PDF document text
    • https://fotojursa.cz/userfiles/file/jefapagowexufowubimuna.pdfIn PDF document text
    • http://tecksco.com/upload/files/pipuvapim.pdfIn PDF document text
    • http://aotwcasino.com/ckfinder/userfiles/files/39098629828.pdfIn PDF document text
    • http://benly-carson.com/product/files/mowamewuwimotojijitur.pdfIn PDF document text
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/1615c93ea8443a---76786335172.pdfIn PDF document text
    • http://iuppiteredizioni.it/kcfinder/upload/files/15736475937.pdfIn PDF document text
    • http://max-metal.pl/gfx/file/61260072594.pdfIn PDF document text
    • http://budropol.de/Upload/file/keriloveketozetilemasiw.pdfIn PDF document text
    • http://ecohort.com/userfiles/files/baludunenikimoni.pdfIn PDF document text
    • http://cdenito.net/userfiles/file/getidejisaxawaturokumigid.pdfIn PDF document text
    • http://mirai-kankyo.com/userfiles/files/94650424962.pdfIn PDF document text
    • https://www.camaragranada.org/administracion/kcfinder/upload/files/kabiliwuf.pdfIn PDF document text
    • https://arvikabc.com/images/uploadedimages/file/2846970298.pdfIn PDF document text
    • https://suncables.co/images/file/169294537.pdfIn PDF document text
    • http://jezirka-biobazeny.cz/UserFiles/File/24045600129.pdfIn PDF document text
    • http://wlpp.net/images/blog/file/76544180948.pdfIn PDF document text
    • http://revize-elektro.info/UserFiles/File/34275283464.pdfIn PDF document text
    • https://handientu.vn/userfiles/file/xivodesoterefepitisamug.pdfIn PDF document text
    • http://cyklo-sport-servis.cz/UserFiles/File/naxakigapanuge.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_off00039b16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39B16 16776 bytes
SHA-256: f7d1c47b2c1e07b3a06b2b4dfa55ead102075fc40e1820e40fb6f4d753c6c034
font_01_sfnt_off0003c6c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C6C7 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003dde7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DDE7 10620 bytes
SHA-256: aef252a8b7f079751acf264ea10b1b766b592136973c0fc55827e7cbd6fe4f9f