Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d2b73fd04e809a…

MALICIOUS

PDF

357.7 KB Created: 2022-02-16 19:34:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 3c1e77ca151fdfc88a03d8d56994e9c4 SHA-1: 484da83037c8a89f72d60c1a888bea5aa783a127 SHA-256: c5d2b73fd04e809a5fc931ce09abb7d2081d2c30b4863f14a9399d8ca682d0e7
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8837

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 https://cafij.co.za/XSRYdR1H?utm_term=joker+smile+images PDF link annotation
    • https://wineart.online/userfiles/file/lefuxanun.pdfIn PDF document text
    • http://koronavirus.lenti.hu/feltoltes/files/fewuvusiwitem.pdfIn PDF document text
    • http://stellamaris.cz/userfiles/81686269452.pdfIn PDF document text
    • http://truhlarstvisollner.cz/data/file/wopix.pdfIn PDF document text
    • http://originalavto.ru/userfiles/file/rofikofemidamerupemejo.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/jofumedelegib.pdfIn PDF document text
    • https://arerp.kr/data/file///90015745066.pdfIn PDF document text
    • http://vizilo-vizitura.hu/admin/kcfinder/upload/files/tukubuputegiris.pdfIn PDF document text
    • https://www.aukuras.org/ckfinder/userfiles/files/nirijev.pdfIn PDF document text
    • https://igk-lilienthal.de/downloads/38408374047.pdfIn PDF document text
    • http://hstechno.com/userData/ebizro_board/file/78649955485.pdfIn PDF document text
    • https://bmw-zona.ru/uploads/file/zopapakekorezawu.pdfIn PDF document text
    • https://eetravel.net/file/vukulabizotu.pdfIn PDF document text
    • http://lecostationery.com/files/file/23914232631.pdfIn PDF document text
    • http://busanpc1.com/upload/fckeditor/file/1514709261.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/183cef8c608547ed9e6feae037a0c687/61862788911.pdfIn PDF document text
    • http://kashima.cc/userfiles/file/94311162839.pdfIn PDF document text
    • http://grimastone.ru/files/ripelarugukowekawa.pdfIn PDF document text
    • http://edmo-cars.nl/images/file/95087357301.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610ac053bd7b1---65079633543.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160df666f0f001---zitidizelamowofuxixax.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000529b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x529B1 18460 bytes
SHA-256: 0edb0b45c82467379fe27451c8d8a34c30f607b0433ad5dae6124074a394665a
font_01_sfnt_off00055a1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55A1C 10332 bytes
SHA-256: 002a73e699c1f58be0021295d098063c4f86640030d5478a8dd01cf81ea5f2cc
font_02_sfnt_off00057175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57175 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9

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