Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c8d445fd20fbf84…

MALICIOUS

PDF

363.5 KB Created: 2022-02-12 02:08:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: d088fabe76b527743af15623d602a160 SHA-1: df3be4def2fee16f361c84baf2668c9a85ceb23c SHA-256: 2c8d445fd20fbf84799e33c385d92a12c288b5b7f02838bfa14c38a30ba9c8c3
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6257

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://yubit.co.za/XSRYdR1H?utm_term=marriage+proposal+biodata+format+free PDF link annotation
    • http://studiocariola.com/userfiles/files/bufodexiteziredevabimok.pdfIn PDF document text
    • http://pro-group.ru/userfiles/files/72433242441.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/7k2t8urj0siqtguls8dg0anr9k/8949316392.pdfIn PDF document text
    • http://snuhonors.com/userfiles/file/33816500071.pdfIn PDF document text
    • http://zavodmdu.ru/userfiles/files/woxepuxaz.pdfIn PDF document text
    • https://dusunceokulu.net/resimler/files/xegovare.pdfIn PDF document text
    • http://ilsungwarehouse.com/userData/ebizro_board/file/79191021178.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/jto2ha1svo7eq3bc0t247cdvp1/68322494688.pdfIn PDF document text
    • http://bjhtdszdh.com/v15/Upload/file/20211221844399842.pdfIn PDF document text
    • http://yucehukuk.com/resimler/files/wefaxafowigoj.pdfIn PDF document text
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/1619109b89a0d3---vabunajolunugu.pdfIn PDF document text
    • https://agrando.cz/files/file/46806602023.pdfIn PDF document text
    • https://vibangnhadat.com/uploads/files/85233602431.pdfIn PDF document text
    • http://rracc.com/file_media/file_image/file/wiwetusawevi.pdfIn PDF document text
    • http://xn--80affcyoc0ac1f6a.xn--p1ai/admin/modules/ckeditor/ckfinder/userfiles/files/60387100038.pdfIn PDF document text
    • http://mgocsm.in/userfiles/file/77713343548.pdfIn PDF document text
    • https://signika.pl/Upload/file/wexurekitulosodik.pdfIn PDF document text
    • http://bioengenharia.com.br/public/libs/kcfinder/upload/files/29325396909.pdfIn PDF document text
    • https://maggievanostrand.com/uploads/media/file/zipikudituxe.pdfIn PDF document text
    • http://www.sana-anong.com/ckeditor/ckfinder/userfiles2/files/79760771630.pdfIn PDF document text
    • https://nezrenweb.com/calisma2/files/uploads/47580131546.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161660b4638c9f---fajono.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/161f206bb1a69d---45158458614.pdfIn PDF document text
    • http://elitacasa.it/images/file/palejoliwesuzabogoxutojot.pdfIn PDF document text
    • http://terfigyelokamera.info/files/file/98043748698.pdfIn PDF document text
    • https://olterus.org/contents/files/11164208525.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/15270749162.pdfIn PDF document text
    • https://marketlayer.com/assets/kcfinder/upload/files/wokodifatamalu.pdfIn PDF document text
    • https://triatlonshop.cz/userfiles/file/15435731363.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/9138adc4b8855d18a29adde3366155b2/kozuf.pdfIn PDF document text
    • http://quiltingacademy.net/fckeditor/userfiles/file/zigebevipetozegurob.pdfIn PDF document text
    • http://maremania.net/img_pagine/file/wolitu.pdfIn PDF document text
    • http://restauraceeverest.cz/userfiles/file/xekozugemenuwizakomeno.pdfIn PDF document text
    • https://www.ccs-corporation.com/ckfinder/userfiles/files/bajijofelukule.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161665d2fda892---67114035475.pdfIn PDF document text
    • http://gemculture.com/userfiles/file/sufesukenonuvaxiziteb.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_off000538a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x538A5 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00054fc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54FC5 10868 bytes
SHA-256: 380027c103478eedc965284257f511ecad095e42a904859997b6c8847142f0d5
font_02_sfnt_off0005686d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5686D 20464 bytes
SHA-256: 2d2f1f41cb675e1f8a99db33a2298ca66dc6f637d23f38ce5080ad1e45640d9e