Malicious PDF — malware analysis report

Static analysis result for SHA-256 19151a8b2424177d…

MALICIOUS

PDF

247.1 KB Created: 2021-12-14 17:33:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: cd479a9720f96dca5947f154d30120f2 SHA-1: 6e0bd300f0ce2e83b39e48d9b128d67406e3422c SHA-256: 19151a8b2424177db63dca77fd84def2fed6e4f680c9eb66bcd6e65b0fbd1e91
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8006

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://decom.pro/admin/ckfinder/userfiles/files/44334804870.pdf In PDF document text
    • http://dotykbylinky.sk/_subory/subory/54680051986.pdfIn PDF document text
    • https://vatlieutaphu.com/upload/files/62617039982.pdfIn PDF document text
    • http://epwuae.com/userfiles/file/lorilojuvenev.pdfIn PDF document text
    • http://conhantaoankhanh.com/webroot/img/files/78618932627.pdfIn PDF document text
    • http://ckudzcssffhhj.handysociality.com/upload/files/69128233500.pdfIn PDF document text
    • http://viquadro.com/userfiles/files/folovubafi.pdfIn PDF document text
    • http://drironcat.com/images/file/rizolowifokipomivulida.pdfIn PDF document text
    • http://fuyu.010bi.com/ckfinder/userfiles/files/ravifajazixaxeburisufa.pdfIn PDF document text
    • https://eslms.com/userfiles/file/38055628702.pdfIn PDF document text
    • http://tuivaivietnam.com/uploads/files/xedufeluxirulelorub.pdfIn PDF document text
    • http://naoshima-tours.com/images/blog/file/56499625842.pdfIn PDF document text
    • https://dbhattacharjee.com/ckfinder/userfiles/files/lefudo.pdfIn PDF document text
    • http://adice-area.com/pictures/files/46777406323.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/e9f2428633944dd0bcd41a8d07d302bf/68027158016.pdfIn PDF document text
    • http://dakov.hu/_user/file/muwawafof.pdfIn PDF document text
    • http://denkobarbell.com/_upload/files/16070515043.pdfIn PDF document text
    • https://beldapromosyon.com/calisma2/files/uploads/6555198173.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/b6f8c410af089015322586d83b15e06e/84065486410.pdfIn PDF document text
    • http://austral-immo.com/userfiles/files/narutitulovex.pdfIn PDF document text
    • http://24x7taazasamachar.com/assets/ckfinder/core/connector/php/uploads/files/xebuvuxodadubope.pdfIn PDF document text
    • http://vietnam-intraco.com/webroot/img/files/tixokajabibadunakeworibi.pdfIn PDF document text
    • http://sns.hu/_user/file/39561145466.pdfIn PDF document text
    • http://aromamahabaleshwar.com/ckfinder/userfiles/files/3460715489.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/e3f53f6ad8489e54949b6b4419e3a5da/97165418559.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/7xhmvLXWVJc/uplcv?utm_term=how+do+i+enable+the+power+query+tab+in+excel+2013PDF 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_off00036f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36F8C 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0003862b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3862B 16876 bytes
SHA-256: bb496b4e9094dae36c236f340b9d7167965f826423937b5b3b3388548298a51d
font_02_sfnt_off0003b21a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B21A 11588 bytes
SHA-256: bfa312d7e1057b0db787d16902772884673ec1be36b62f84a9d67915484d666f