Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b652a3f1406800…

MALICIOUS

PDF

143.6 KB Created: 2022-03-22 23:56:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: dd868b0dad2006512bb396adea50badf SHA-1: da866caf2c961d59fd503579eeb74d373e6a7fc3 SHA-256: a8b652a3f1406800069e704f99a29904dc962b8f3a0ef40a887bff97941c36e7
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9606

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
  • 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.
  • 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://zzwgjx.com/d/files/ritonogedefiteramu.pdf In PDF document text
    • http://jamalcar.com/userfiles/file/62776222755.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621567aa27d60---36644147419.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621c5469a0151---pakejetunelilaturid.pdfIn PDF document text
    • https://acavacecio.it/userfiles/files/panakuzarex.pdfIn PDF document text
    • https://thepainter.asia/upload/files/zekozagusubugexufop.pdfIn PDF document text
    • http://www.grupotresa.com/uploads/kcfinder/upload/files/bodelupime.pdfIn PDF document text
    • https://powerliteaac.com/userfiles/file/viwexipevobo.pdfIn PDF document text
    • http://lambanghieuquangcaogiare.net/vietkiendo/upload/file/gejunugolenegovesewose.pdfIn PDF document text
    • http://xinyuemu.net/assets/202203/files/20220307210152987835.pdfIn PDF document text
    • https://tungafilm.com/dorceiys/ckfinder/userfiles/files/rekimelaf.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/powodigimibaxujofuraz.pdfIn PDF document text
    • https://pecas.friparque.pt/userfiles/file/52866596922.pdfIn PDF document text
    • https://dpdpunjabi.myskoolapp.com/FCKeditor/FCKimgUpload/file/xerarajarobuguri.pdfIn PDF document text
    • http://etyekilovarda.hu/userfiles/file/sululi.pdfIn PDF document text
    • http://basic-55.su/kcfinder/upload/files/98833514276.pdfIn PDF document text
    • https://cuisinescartier.ca/upload/editor/file/10515555253.pdfIn PDF document text
    • https://kotata-zlin.cz/obr/clanky/file/bevatogalem.pdfIn PDF document text
    • http://duquenne-moteurs.fr/webroot/upload/files/pizogifizes.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/217e231f2c5f920e3baaf15b53071e14/vufejelogilazumokure.pdfIn PDF document text
    • http://motorlustor.net/userfiles/file/nurimazu.pdfIn PDF document text
    • https://asken.as/bilder/file/87045201136.pdfIn PDF document text
    • http://meghdoothsuzuki.com/uploads/fapinugabunumaluwopisu.pdfIn PDF document text
    • https://www.beltiar.by/css/assets/plugins/kcfinder/upload/files/29952533898.pdfIn PDF document text
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/16233c01166225---rejafawirejebanukuf.pdfIn PDF document text
    • http://everbeenmagnet.com/js/upfiles/files/niwevoludefobimamonomem.pdfIn PDF document text
    • http://zoltysnieg.pl/pliki_wyswig/files/50320102362.pdfIn PDF document text
    • http://tradotel-riviera.com/file/38268261677.pdfIn PDF document text
    • https://producedepot.us/userfiles/files/7831143368.pdfIn PDF document text
    • http://shop-exclusive.cz/userfiles/file/lawexenabipanapijurufewi.pdfIn PDF document text
    • http://restravel.ru/ckfinder/userfiles/files/99535416055.pdfIn PDF document text
    • http://zeguvietnam.com/uploads/ckfinder/files/88594756732.pdfIn PDF document text
    • https://cafij.co.za/XSRYdR1H?utm_term=2.6.1.2+lab+securing+the+router+for+administrative+accessPDF link annotation
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1623611ecd3eb3---3311747694.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 extracted file (font_00_sfnt_off0001cf84.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0001cf84.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001cf84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CF84 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0001e6a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E6A4 11540 bytes
SHA-256: f8375674701aea7c672d36e82668e12a9c74521248f76b54eb53ba57d5a2b015
font_02_sfnt_off000201ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x201AD 16876 bytes
SHA-256: c9666b7d6a927069c6f7d898486868f19bcd6a9a832d226e4257327001fd5c0c