Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dcc3fd7c3d9752…

MALICIOUS

PDF

462.0 KB Created: 2022-02-28 22:53:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 353f4837a9eb78c35b436bb498aa3c15 SHA-1: 5d373e6d788887d7941f819296c479f2a6b74ea0 SHA-256: c5dcc3fd7c3d9752446497b09a0a7ae084893985f925f4280e9fa65f52a60a59
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6958

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=malaria+treatment+guideline+uk PDF link annotation
    • https://speakingparrot.com/upload/ckfinder/files/kawajodafozizixuxiwiwo.pdfIn PDF document text
    • https://gsc-tw.com/userfiles/file/rogatujitexa.pdfIn PDF document text
    • https://fontini-rozetki.su/kcfinder/upload/files/64066554795.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161fa482fe41da---11850535555.pdfIn PDF document text
    • http://fanta-life.com/userfiles/file/24129017839.pdfIn PDF document text
    • http://bernendorf.ru/userfiles/file/50888595592.pdfIn PDF document text
    • http://dc-0b9b12d700ad.collinite.pl/userfiles/file/14071956032.pdfIn PDF document text
    • http://geteffective.biz/uploadfiles/file/94398552016.pdfIn PDF document text
    • http://noithatachau.vn/webroot/img/files/pirup.pdfIn PDF document text
    • http://e-district.org/userfiles/file/wuvesipedinozovebolutumin.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621999a7a9173---68404151220.pdfIn PDF document text
    • http://jtg-antracyt.pl/files/file/98138724475.pdfIn PDF document text
    • http://ayrh.internet-match.com/upload/files/zawunexujejipevuxanutukus.pdfIn PDF document text
    • http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f94b0a170ce---sirosusuvewu.pdfIn PDF document text
    • http://mitrasejati.co.id/assets/kcfinder/upload/files/8956761910.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_off0006c650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C650 10488 bytes
SHA-256: 5324b48a72a8cd34a8831262ff94b16abe812df4fab25ddeb9072a1a491aff9e
font_01_sfnt_off0006dddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDDF 20076 bytes
SHA-256: 9f2798cdf1854bc56606fe2f49c0e575cbea2e5b8d28da6827e3ab5fe4289f3f
font_02_sfnt_off0007127f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7127F 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9

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