Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f664f1d12b55f36…

MALICIOUS

PDF

314.9 KB Created: 2022-03-28 17:00:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: 76c0f9a70b01c75097136053bc53cf03 SHA-1: 36bb420ff3f60901c5ba03c0a8b11ea026dffd51 SHA-256: 8f664f1d12b55f36b27009cc17084c190ac71ef71c9c879175e592c27406c254
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5734

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 http://xn--80aafbjcazdrhzgiddbbcsg4l.xn--p1ai/pict/file/natevibefaliretisupuwuw.pdf In PDF document text
    • https://liad-alger.fr/admin/style/js/edit/kcfinder/..%5Cimages%5Ccontenue/files/ratewu.pdfIn PDF document text
    • https://karate2.cdmedia.pl/userfiles/file/getilejawogawe.pdfIn PDF document text
    • http://rewitex.pl/userfiles/file/56721669154.pdfIn PDF document text
    • http://valburysekuritas.co.id/upload/files/78884235270.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/2d60e4a1c4f4104819a003f9a6f7d791/41962420766.pdfIn PDF document text
    • https://happen.webasl.com/userfiles/file/40798597650.pdfIn PDF document text
    • https://drhuanghair.com/uploads/files/202203091922235817.pdfIn PDF document text
    • http://isvpro.com/custom/files/vexinebibonilifu.pdfIn PDF document text
    • https://laptopserwis.com/app/webroot/media/files/dajago.pdfIn PDF document text
    • https://asset-books.com/userfiles/file/govopanuda.pdfIn PDF document text
    • https://www.fuji-chem.co.jp/admin/js/kcfinder/upload/files/xirowowatabutaguvuvilada.pdfIn PDF document text
    • http://top1np.com/ckfinder/userfiles/files/jisuzu.pdfIn PDF document text
    • https://zenithoverseas.com/assets/userfiles/files/31799052820.pdfIn PDF document text
    • http://kadh.kr/bobod/upload/file/vamuzenonukowixegurerew.pdfIn PDF document text
    • http://apcmagon.com/userfiles/37600336076.pdfIn PDF document text
    • http://studiogaleazzo.eu/userfiles/files/39690062996.pdfIn PDF document text
    • http://learnersdigest.org/userfiles/file/54049620568.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fe80a514308---45272112409.pdfIn PDF document text
    • http://nijiclothing.com/assets/ckeditor/kcfinder/upload/files/33304852473.pdfIn PDF document text
    • http://investinwielkopolska.pl/application/lib/ckfinder/userfiles/files/kepifaturumexotuk.pdfIn PDF document text
    • https://bonaparte.cappencms.com/templates/files/pinosizal.pdfIn PDF document text
    • http://morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621427e3cbf87---tiwajizatobu.pdfIn PDF document text
    • http://cadex-forensique.ch/app/webroot/kcfinder/upload/files/pefuganaxanadadenas.pdfIn PDF document text
    • http://aksaxena.com/bpms/includes/fckeditor_uploads/userfiles/file/lozib.pdfIn PDF document text
    • https://cbdc.co/uploads/ckfinder/userfiles/files/20411183282.pdfIn PDF document text
    • http://abdobson-new.simplywebeditor.com/site-uploads/13730317070.pdfIn PDF document text
    • http://xinshifm.com/userfiles/file/10792214120.pdfIn PDF document text
    • https://rajatotogroup4.com/contents/files/38368700491.pdfIn PDF document text
    • http://wallbedsindia.com/uploads/sunonowufamov.pdfIn PDF document text
    • https://thefencedocumentary.ca/adminfiles/file/76011303596.pdfIn PDF document text
    • http://kraemer-duennebacke.de/files/file/zarusamer.pdfIn PDF document text
    • http://www.pvvc.cz/files/18532606006.pdfIn PDF document text
    • http://radio-salsa.fr/php/rs/filesupload/file/7712774697.pdfIn PDF document text
    • http://ukonlinedirect.com/userfiles/files/wobuxugazekasosulu.pdfIn PDF document text
    • http://capital96.com/userfiles/file/57733536812.pdfIn PDF document text
    • http://propack-th.com/image/upload/File/rabezi.pdfIn PDF document text
    • https://wirut.co.za/XSRYdR1H?utm_term=school+of+tomorrow+answer+keys+pdfPDF link annotation
    • https://braintreeclinics.com/app/webroot/img/files/32825656820.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_off0004622b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004622b.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004622b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4622B 11160 bytes
SHA-256: d90cc29e598e19e5f93de809d7ba32b5cfafc993516b855e05288825cddcae14
font_01_sfnt_off00047c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47C29 19268 bytes
SHA-256: f382e8c2440fdc1b3c637d4f0c5de9380fa60ad389d7dfe0cd42e9e537febfb4
font_02_sfnt_off0004adeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ADEB 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_03_sfnt_off0004c509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C509 16336 bytes
SHA-256: adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa