Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d33aa0deb5106ae…

MALICIOUS

PDF

74.4 KB Created: 2021-10-20 08:48:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-14
MD5: 7b2b2a77e74e013c9163e56276af24e6 SHA-1: 77e78fcdd07a279d893d0576a55cbb301f327047 SHA-256: 0d33aa0deb5106ae5ea96b68fb6b7c0258b356680ce973a73b985052a719b1ff
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bitree.com/ckfinder/userfiles/files/xoduzopatakonusedena.pdf In PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149d0f6d77fb---17258534294.pdfIn PDF document text
    • http://pilanatofishing.com/home/sandbox/domains/shelter.sandbox.tritek.hk/public_html/ckfinder/userfiles/files/91827326494.pdfIn PDF document text
    • https://wendi101.com/userfiles/file/67900272872.pdfIn PDF document text
    • http://yogo110.com/userfiles/file/fuzatamesimorudagelo.pdfIn PDF document text
    • http://micronforgacsolo.hu/UserFiles/file/levowoxeduregebi.pdfIn PDF document text
    • https://strongpointmarketing.net/userfiles/file/75443375422.pdfIn PDF document text
    • https://hijaustabilo.com/contents/files/28863721130.pdfIn PDF document text
    • https://htijsr.com/userfiles/file/pubejobo.pdfIn PDF document text
    • http://synfarm.com/upload/files/sejomomiteregupedevik.pdfIn PDF document text
    • https://maintogelonline2.bet/contents/files/bifij.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/161560885d760c---daxodizoxu.pdfIn PDF document text
    • http://preiswerte-unterkunft-papenburg.de/mediapool/lefopujogigipijonopatuno.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613993e99a5d5---gomufemuwifusinedefolu.pdfIn PDF document text
    • http://tasarimak.com/ckfinder/userfiles/files/47077794019.pdfIn PDF document text
    • http://3asoft.vn/img/files/89580458470.pdfIn PDF document text
    • https://jungleflightchiangmai.com/Uploads/files/pomejejosanepokusosoluved.pdfIn PDF document text
    • http://vino-charlie.cz/userfiles/file/61337750052.pdfIn PDF document text
    • https://flavio-tonon.it/public/file/kaxamejajolitowulazemaxuj.pdfIn PDF document text
    • http://gernano.eu/gfx/userfiles/files/vofak.pdfIn PDF document text
    • http://vip-cond.ru/userfiles/file/zoxege.pdfIn PDF document text
    • http://sakulchaiplace.com/Uploads/file/32486555106.pdfIn PDF document text
    • http://markasib.ru/ckfinder/userfiles/files/rilidonomiwezijitotone.pdfIn PDF document text
    • http://www.facyt.com.ar/ckfinder/userfiles/files/71498954571.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/cmwvf4RlXg4/uplcv?utm_term=dollar+tree+near+me+bronxPDF 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_off0000c1c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1C0 16384 bytes
SHA-256: 8973c6093f4adde5e369c6e92776a25dd5d2cd172691088065096627c05f9ea6
font_01_sfnt_off0000ecc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC2 10252 bytes
SHA-256: df9b09c593a861cc9c4ca2cd0d91e89d1becc20b98612ea211958257ba945877
font_02_sfnt_off000103cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1