Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df64f5163f00aad…

MALICIOUS

PDF

526.1 KB Created: 2021-12-14 20:54:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: 39d46ad2c9fb2718ccac2c20e5611dda SHA-1: 06186c95791e03491a304b4066839e7ad1456a49 SHA-256: 6df64f5163f00aad147fb407c6eec05154f0edcb19b4bb2d1efb2624a4ac528c
164 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4376

Heuristics 5

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ketchas.ru/uplcv?utm_term=how+to+cook+a+steak+in+an+air+fryer In PDF document text
    • http://rebeccafantarchitetto.it/userfiles/files/70268466041.pdfIn PDF document text
    • http://garage-ys.info/js/upload/files/lolosa.pdfIn PDF document text
    • https://kristaldicarlo.com/userfiles/file/sasipupuj.pdfIn PDF document text
    • http://makesrealsense.com/ckfinder/userfiles/files/gezijav.pdfIn PDF document text
    • http://bortran.com/upload/image/file/20211106093842.pdfIn PDF document text
    • http://moriefrusca.com/userfiles/files/zopagenu.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/16144ee4ca11dc---73187319111.pdfIn PDF document text
    • https://minervatech.work/js/ckfinder/userfiles/files/8026904380.pdfIn PDF document text
    • http://hotelgiottotorino.com/userfiles/files/1573417869.pdfIn PDF document text
    • http://tmkb.org.tr/ckfinder/userfiles/files/lemuwezo.pdfIn PDF document text
    • https://codecs.ro/images/file/84847656409.pdfIn PDF document text
    • https://codefon2.solar-napkollektor.hu/js/ckfinder/userfiles/files/57232323754.pdfIn PDF document text
    • https://clinicscrm.com/img/files/660019512.pdfIn PDF document text
    • http://studiosiciliani.eu/userfiles/files/48385722600.pdfIn PDF document text
    • http://specimport.by/files/files/lurapazemazowigij.pdfIn PDF document text
    • http://starlistthailand.com/uploads/file/49659089711.pdfIn PDF document text
    • https://yodishit.com/uploads/userfiles/file/63268338055.pdfIn PDF document text
    • https://www.corpeverest.com/ckfinder/userfiles/files/63916463428.pdfIn PDF document text
    • http://kool-house.com/upload/editor/file/tukurepogogiso.pdfIn PDF document text
    • http://stinpo.com/ckfinder/userfiles/files/sanekexepofekipepavi.pdfIn PDF document text
    • https://ntiverification.com/userfiles/file/mufibitamoluvunakunesed.pdfIn PDF document text
    • http://lsneotek.com/ckupload/files/nekibo.pdfIn PDF document text
    • https://caraudioshop.ro/mm/file/5982366386.pdfIn PDF document text
    • http://cnwt.mgo.cool/upfile/files/2021/11/19/41969474602.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_off0007c8f6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0007c8f6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0007c8f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8F6 18772 bytes
SHA-256: 069ad3890145afcb85f2a0e6bbea4105dd24175560467b958b3039062c8f3399
font_01_sfnt_off0007fa79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA79 10568 bytes
SHA-256: 9d8ba2d2109b6981fd3f1b51d108593e8ad252e69a913b2223bd9e7837f6d13b
font_02_sfnt_off000812cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x812CC 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336