Malicious PDF — malware analysis report

Static analysis result for SHA-256 af23f837e5a04474…

MALICIOUS

PDF

291.0 KB Created: 2022-04-07 22:45:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: e95894d50f57a11e3a113abb6c94e123 SHA-1: 33e525723a41122b2cb6ac5075f858985a27bfff SHA-256: af23f837e5a044742ce51c03644301d2495f3147172c23e6a45065f7c79c468d
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6859

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://fecuq.co.za/XSRYdR1H?utm_term=gta+5+duel+random+event PDF link annotation
    • http://fabellomobilya.com/app/webroot/kcfinder/upload/files/37068870994.pdfIn PDF document text
    • https://7m-shop.com/userfiles/file/40607608029.pdfIn PDF document text
    • http://nt-module.ru/ckfinder/userfiles/files/zezabaje.pdfIn PDF document text
    • http://tauthuy.vn/upload/files/71238920946.pdfIn PDF document text
    • http://skazka76.ru/pic/userfile/17455005257.pdfIn PDF document text
    • https://watfordfairtrade.org/app/webroot/img/files/49542789653.pdfIn PDF document text
    • http://abdobson-new.simplywebeditor.com/site-uploads/rowobuv.pdfIn PDF document text
    • https://booking-news.hkdnracing.com/webroot/editor-uploads/files/23124544493.pdfIn PDF document text
    • http://mariancozma.com/_user/file/20285798088.pdfIn PDF document text
    • http://eperon-kochersberg.com/img_db/1570549115.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/16217e189c909b---73620013053.pdfIn PDF document text
    • http://chronoflex-dz.com/app/webroot/assets/js/kcfinder/upload/files/folajotofupizarupitamebu.pdfIn PDF document text
    • http://iba.education/kcfinder/upload/files/61956800572.pdfIn PDF document text
    • http://www.medicellbank.com/userfiles/files/39533693116.pdfIn PDF document text
    • https://nic-irq.com/userfiles/files/28385051536.pdfIn PDF document text
    • http://pizzeriadevita.it/userfiles/files/zoxodizefi.pdfIn PDF document text
    • http://beautifulmoda.com/userfiles/files/bewotuduzunaxona.pdfIn PDF document text
    • http://integrotech.pl/zdjecia/file/3114808775.pdfIn PDF document text
    • http://artesaonato.art.br/kcfinder/upload/files/punobo.pdfIn PDF document text
    • https://kientrucmoi.com.vn/admin/kcfinder/upload/files/gebepudenegada.pdfIn PDF document text
    • https://nasco-ye.com/uploads/file/92191023110.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/1621c4f5ae3ff6---revuzadokijijuwuveru.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/d309f98c03d3b31c1326abd946d732a5/29410910992.pdfIn PDF document text
    • http://lor-rostov.su/userfiles/files/fisifajapikukijozori.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/16228a29ee666c---mibediwigela.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00040185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40185 16336 bytes
SHA-256: adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa
font_01_sfnt_off00041788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41788 10488 bytes
SHA-256: cf309680f22ee1bf14e57b2e9ef19dbaf6071e49861797dfcbe4ce57be39a8d8
font_02_sfnt_off00042f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42F76 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00044788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44788 20124 bytes
SHA-256: 7f25a69241bd815e4e15ca14f1dc4e3648a178a120222986e1686f55bddae49e