Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d857ea79d8d804d…

MALICIOUS

PDF

419.8 KB Created: 2022-01-10 22:52:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 8a59381acb461e5953e99cdc76d9c4e0 SHA-1: d3b0b610838e63258fa32ef6732b395ddfbc8808 SHA-256: 5d857ea79d8d804d11517155352b345bec2c6fba44b0829e31a4068881373adb
144 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4959

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://netshopnepal.com/userfiles/file/nusipizitupipibojiwowora.pdf In PDF document text
    • http://aow.infogestnet.it/ckfinder/userfiles/files/sunabifuvaxakisubafawo.pdfIn PDF document text
    • https://jjcfurnituremaker.com/userfiles/files/tulapefudaxaw.pdfIn PDF document text
    • https://tgvl.in/uploads/fck/files/5639847210.pdfIn PDF document text
    • https://adminshantitechnical.com/userfiles/file/ruxugusaponusifodile.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1614c2686cfc39---96082216766.pdfIn PDF document text
    • http://kazuma.ru/ckfinder/userfiles/files/musolebujapupomabuzilexe.pdfIn PDF document text
    • http://ysenb.kr/board/file/editor/file/11699275195.pdfIn PDF document text
    • http://hoangminhphatkorea.com/webroot/img/files/vuxot.pdfIn PDF document text
    • http://unii-dz.org/app/webroot/js/kcfinder/upload/files/69234688201.pdfIn PDF document text
    • http://eastindiaspray.com/suvra/eastindia_spray/files/zosunosolorulinatuvamego.pdfIn PDF document text
    • https://tmtteks.com/files/jozuvezawojabenubagikojas.pdfIn PDF document text
    • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/63990702647.pdfIn PDF document text
    • https://khabul.mn/mmpa/userfiles/files/nonivekuvomeforujegike.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b950c36d349---4572175652.pdfIn PDF document text
    • https://adsbudget.net/userfiles/file/92050984821.pdfIn PDF document text
    • http://gainliving.com/upload/editor/file/56677833822.pdfIn PDF document text
    • https://ptkas.com/kingkong/userfiles/files/85349725270.pdfIn PDF document text
    • http://justsayhi365.com/uploads/file/vetisuvenuxejejipidomigo.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1619c2d2f2a13d---nibobixexaguzomawugawexe.pdfIn PDF document text
    • http://ivankotov.ru/img/lib/file/finojurekumabadu.pdfIn PDF document text
    • http://leaguengn.com/userfiles/file///sidiwupubotaxenuzum.pdfIn PDF document text
    • http://myepres.com/HotelEstimator/userfiles/file/bizekejijimu.pdfIn PDF document text
    • http://wych123.com/upload/files/8713292993.pdfIn PDF document text
    • https://vinaskitchen.com/nbloom/fckuploads/file/zezemisokofet.pdfIn PDF document text
    • http://mobilni-kadernictvi.cz/files/file/16640402815.pdfIn PDF document text
    • http://rosspeed.com/kcfinder/upload/files/7049838774.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/BcFPVxLj4jw/uplcv?utm_term=diabetes+guidelines+canada+2013+pdfPDF link annotation
    • 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_off00062058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62058 11280 bytes
SHA-256: 831988470831119af4179218136fe5eed715242969a5c22326636086a303e688
font_01_sfnt_off00063ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AB1 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00065150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65150 17836 bytes
SHA-256: bb5e2e2c6337d5cafe7625cbc9660d187f4afafe3b5bb38c77f2b9a834c92897