Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a6f9d2e34bd74b…

MALICIOUS

PDF

324.2 KB Created: 2022-02-25 02:05:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-10
MD5: 80a32facff0bb5eb62a455ef10d8a46c SHA-1: bd1b4813d3d971fb6434712bfe1a15c1e5f41747 SHA-256: 18a6f9d2e34bd74bcfe221b6ef7cb747f9e233b1de8c6ed0ebab0dc3aa7e7895
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6480

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://merten-antik.su/kcfinder/upload/files/72996345409.pdf In PDF document text
    • http://doktor-okonski.pl/uploadimg/file/52516731239.pdfIn PDF document text
    • https://heks-tech.com/app/webroot/userfiles/files/19493311101.pdfIn PDF document text
    • https://hefcom-hydraulics.com/ckfinder/userfiles/files/mitiku.pdfIn PDF document text
    • http://105chers.netsociality.com/upload/files/saxaxerolenudonufatova.pdfIn PDF document text
    • https://valkexclusief.reviewz.eu/app/webroot/files/usf/files/xevugavaseb.pdfIn PDF document text
    • http://topup-fight.com/ckfinder/userfiles/files/53701517014.pdfIn PDF document text
    • http://kolbiko.com/images/uploads/file/milusu.pdfIn PDF document text
    • https://alyosserspneed.com/userfiles/files/telaresiputobokalivamob.pdfIn PDF document text
    • http://xn----7sbbbizu2bxaod.xn--p1ai/userfiles/file/31949123924.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/j7u53gdb6berioarki1nbofi24/70756793910.pdfIn PDF document text
    • http://simkoongschool.com/uploads/editer/files/67633760013.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161ef67aa4cf33---jinomis.pdfIn PDF document text
    • http://www.guidanceias.com/assets/files/plugins/kcfinder/upload/files/24208422768.pdfIn PDF document text
    • http://ieeepes-thailand.org/app/webroot/files/files/lekexedanuxo.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/161f75f5de8a79---nukewibalurowuwulawelezon.pdfIn PDF document text
    • https://www.ozkozel.sk/kcfinder/upload/files/68166237539.pdfIn PDF document text
    • http://la-traverse.biz/kcfinder/upload/files/18385541591.pdfIn PDF document text
    • http://parzenica-bialka.pl/userfiles/files/13509412428.pdfIn PDF document text
    • http://www.egavilanes.com/ckfinder/userfiles/files/nikuxonadojiguvag.pdfIn PDF document text
    • https://zapcdn.space/web/img/podborky/files/lujixirodinimo.pdfIn PDF document text
    • http://veganogle.es/uploads/ckfinder/files/12971239758.pdfIn PDF document text
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/d81ba04eb11cdea3799800bbeda04ca4/61190424531.pdfIn PDF document text
    • http://nprofit.hk/userfiles/posamofiduwanosonuwaxi.pdfIn PDF document text
    • http://haki.tincorner.com/uploads/files/53961359881.pdfIn PDF document text
    • https://questyme.ca/userfiles/file/98497961104.pdfIn PDF document text
    • http://news-hk.net/uploadfile/file///tabokomiju.pdfIn PDF document text
    • https://yubit.co.za/XSRYdR1H?utm_term=subtracting+decimals+worksheet+6th+gradePDF link annotation
    • https://rts-wm.com/ckfinder/userfiles/files/50873978049.pdfIn PDF document text
    • https://tes-sys.com/uploads/ckfinder/files/20210904/16307273705824.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_off000487a6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000487a6.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000487a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x487A6 11480 bytes
SHA-256: 8a832f261577278e0821f3842041884008f5df6edb33591ed04d8a87db6bb1ff
font_01_sfnt_off0004a278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A278 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004b993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B993 18808 bytes
SHA-256: bc2ee46b867053ee961b18753138adb718420f9c216b516daf1993a44da1f0f2
font_03_sfnt_off0004eb22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EB22 16220 bytes
SHA-256: 207eb3b51995adbdef2a766e0364e2c2ee182a7f0f0647c12a4a3807efc046f6