Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b91bfe5fc2cd6f…

MALICIOUS

PDF

152.2 KB Created: 2022-03-25 23:01:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: a810bebce710964ab3d1477245f2224c SHA-1: cca618ce18584158cd743cded224bb58a7b405c9 SHA-256: 72b91bfe5fc2cd6f0ebdec1fc6e2e87074847ef234fb8bd9b002718146bc01f0
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9446

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://podar.co.za/XSRYdR1H?utm_term=asterios+polyp+goodreads PDF link annotation
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/16207bd92a261a---73903070489.pdfIn PDF document text
    • http://mqskin.com/luutru/files/14211845238.pdfIn PDF document text
    • https://igmof.com/admin/js/kcfinder/upload/web_file_ig_1/files/5513642540.pdfIn PDF document text
    • http://4chan.ro/UserFiles/file/57534734432.pdfIn PDF document text
    • https://kuhni-italy.ru/media-temp/img/uploads/files/vubopujaveresemijuv.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/16216adeb73799---66346059741.pdfIn PDF document text
    • http://www.luna1956.com/images/library/File/97397883747.pdfIn PDF document text
    • http://hig-hegmann.de/userfiles/file/1160009046.pdfIn PDF document text
    • http://cheapneasytrafficschool.com/CheapNEasyTrafficSchool/pa/trainstation/uploads/image/file/11093570886.pdfIn PDF document text
    • https://iohrp.org/f_files/files/92206770788.pdfIn PDF document text
    • http://webursitet.org/Files/file/getaxefufapadewolugarek.pdfIn PDF document text
    • https://cakenepal.com/userfiles/file/direxuzasizepinifal.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161fe04244418e---taruve.pdfIn PDF document text
    • https://askisan.daynexdemo.tk/upload/files/93596876178.pdfIn PDF document text
    • http://marmaraisg.com/images_upload/files/sikud.pdfIn PDF document text
    • https://dverimilana.ru/media-temp/img/uploads/files/takawenipak.pdfIn PDF document text
    • http://garoli.com.br/js/kcfinder/upload/files/72296853104.pdfIn PDF document text
    • http://j1ent.com/userfiles/file/20220212092124.pdfIn PDF document text
    • https://upsoul.com.br/assets/kcfinder/upload/files/77785216110.pdfIn PDF document text
    • http://forensique.ch/app/webroot/kcfinder/upload/files/13187314076.pdfIn PDF document text
    • http://studioingtassinari.eu/userfiles/files/72696699912.pdfIn PDF document text
    • http://chamdure.com/DATA/files/45464124740.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/7b3e07f0ee9a1cd804112faabb1f0cc5/gipunokajo.pdfIn PDF document text
    • http://www.acs-pack.fr/kcfinder/upload/files/ganeba.pdfIn PDF document text
    • https://toptenstudy.com/upload/files/BodyFile__622175146AF3D.pdfIn PDF document text
    • https://doradca-bankowy.pl/files/files/fujapafigugefamulomo.pdfIn PDF document text
    • http://siriussiramatik.com/panel/kcfinder/upload/files/nepirazin.pdfIn PDF document text
    • http://nceed.kr/pds/userfiles/files/dujadugosorudejuredo.pdfIn PDF document text
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620f1a9b39008---7115062493.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/1621ab12a91cad---nitanumujagufosajosefoz.pdfIn PDF document text
    • http://arcomproltd.com/userfiles/file/63412490499.pdfIn PDF document text
    • http://danamthanh.vn/userfiles/file/nurimutuxumujagamogago.pdfIn PDF document text
    • https://dbmotorbrokers.com/userfiles/file/giziwalok.pdfIn PDF document text
    • http://studioarclab.eu/userfiles/files/41668341750.pdfIn PDF document text
    • http://spostojow.pl/userfiles/file/galufadatedade.pdfIn PDF document text
    • http://ktimavoyatzi.gr/images/files/files/javuditoguxu.pdfIn PDF document text
    • http://ctcinsulator.com/uploads/file/52982533426.pdfIn PDF document text
    • http://dent-pro.cz/pic/file/tubezopuk.pdfIn PDF document text
    • http://elitacasa.it/images/file/saxupigidoga.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_off0001eea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EEA2 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000205c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x205C2 10556 bytes
SHA-256: 5596f0e4fa843187cefcaec6f66909b8ab478b4d9d13fd826462cca17fe2ee92
font_02_sfnt_off00021dc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21DC8 19204 bytes
SHA-256: b39a084864e758f85aa0a057f61447ca313884987ec899a673cdd0b782512eb5

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