Malicious PDF — malware analysis report

Static analysis result for SHA-256 af28a0a1c46a83dc…

MALICIOUS

PDF

80.6 KB Created: 2021-09-10 20:03:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: d8dd9c401b53824722123598c2445271 SHA-1: 071308fec9be0cb48aafc289d80372e205c743db SHA-256: af28a0a1c46a83dcc4e843f25cdda4683201b30a8c48b8939461f5d2060b159d
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

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 http://pantryscan.com/123cars/imagefck/file/ferogavurenirizufesotag.pdf In PDF document text
    • http://wijnhuis-vaessen.nl/site/data/ws/files/xuxiruretaluruvifiko.pdfIn PDF document text
    • https://xn--b8qxb801j.tw/upload/files/fozijobeguduwadipezufi.pdfIn PDF document text
    • https://tadimtursu.com/image/files/43430191648.pdfIn PDF document text
    • https://institutdesante.org/userfiles/file/32679764053.pdfIn PDF document text
    • http://clarklawtexas.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/febenexatu.pdfIn PDF document text
    • http://dierenwinkelindex.nl/images/uploads/67810919430.pdfIn PDF document text
    • http://paneldeconso.com/userfiles/file/55040870928.pdfIn PDF document text
    • http://snft.ro/media/file/48309915580.pdfIn PDF document text
    • http://idroter.org/userfiles/files/6376917176.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b06e1007fb---tepowaleja.pdfIn PDF document text
    • http://bpabv.nl/uploadfiles/file/92988184820.pdfIn PDF document text
    • http://robalton.es/Albums/images/file///faxuwataxumewobevuporojuw.pdfIn PDF document text
    • http://hotel-gerard-dalsace.com/upload/document/pokawemomesaxaritarex.pdfIn PDF document text
    • https://dentalrud.com/userfiles/file/mixilibi.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/fatefepejenimageso.pdfIn PDF document text
    • https://pensiuneaselina.ro/userfiles/file/lewonexalozunesag.pdfIn PDF document text
    • http://spc1991.com/ckfinder/userfiles/files/18780053177.pdfIn PDF document text
    • http://hatowo.com/app/webroot/uploads/files/13558050965.pdfIn PDF document text
    • http://sunmoon-glory.com/web/upload/files/30132883100.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff78c67ec3---90479416692.pdfIn PDF document text
    • http://beiwendq.com/data/attachment/file/99264063487.pdfIn PDF document text
    • http://shepardinteriordesign.com/rw/upload/file/jilelagigeduviviro.pdfIn PDF document text
    • https://foodthings.us/userfiles/file/310050966.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a07c92530a---zarimuzo.pdfIn PDF document text
    • https://aadharshilaschool.org/userfiles/file/76011094205.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613593e2dcce0---52705673611.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/8c1612cbaba120a8346901c41f72f6f0/10458825280.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=tv+shows+free+download+sitesPDF link annotation
    • 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_off0000d6dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DD 17740 bytes
SHA-256: 86a0b4b8b4c75672eec529ed86807d58df5d9444392de4067dc9f9cb717ce889
font_01_sfnt_off000104bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104BC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011cd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD3 10564 bytes
SHA-256: ceb82c6b67a7adea96bbfc745bc145d1a4a22b77fa553e2bb17915059ac13d8f