Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2c52b6934a9d9e…

MALICIOUS

PDF

349.0 KB Created: 2022-01-05 18:03:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 1735987d62070e43bdeffc618dbdd7bf SHA-1: 1be71e4fed95e738b58f36a430988701e8a0681b SHA-256: af2c52b6934a9d9ec138db38c269fe67e082da4540386e4255afcaa98057dc0a
182 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6933

Heuristics 8

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://philabc.ru/uplcv?utm_term=certificate+authenticity+template+microsoft+word PDF link annotation
    • http://pulsarvn.com/media/ftp/file/61300016198.pdfIn PDF document text
    • http://mcutech.net/files/85436574288.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618ade82db5fe---jovekuz.pdfIn PDF document text
    • http://greece-ex.com/images/blog/file/xibejewirufade.pdfIn PDF document text
    • https://yasacompany.com/upload/files/ranedamomujujajaniwaz.pdfIn PDF document text
    • https://mecu.cs.nctu.edu.tw/kcfinder/upload/files/tosudaxi.pdfIn PDF document text
    • https://ubranni.com/uploader/files/bapijasiva.pdfIn PDF document text
    • http://quiltingacademy.net/fckeditor/userfiles/file/tadufifupigux.pdfIn PDF document text
    • http://agriturismolataggiasca.eu/userfiles/files/simodijirojam.pdfIn PDF document text
    • https://digicpictures.com/downloads/norafudini.pdfIn PDF document text
    • https://gameadvisers.com/js/new/fckeditor/userfiles/file/72996061812.pdfIn PDF document text
    • http://eurolocal.info/sites/default/files/images/file/58691597627.pdfIn PDF document text
    • https://anep.it/ckeditor/kcfinder/upload/files/60713626840.pdfIn PDF document text
    • https://jainajewellers.com/kcfinder/upload/files/43423755869.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/161c945297c6c5---punepaxojo.pdfIn PDF document text
    • http://toyteepee.com/uploadfiles/file/210910223312074394cukegz.pdfIn PDF document text
    • http://klavierunterricht-bergedorf.de/files/files/panufuxitirelajijofop.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1616a3ec0c9821---66104682512.pdfIn PDF document text
    • http://www.perlodrink.com/documents/3779280744.pdfIn PDF document text
    • http://sunrui-ti.com/d/files/8421050240.pdfIn PDF document text
    • https://honghow.com/ckfinder/userfiles/files/banoz.pdfIn PDF document text
    • http://tea-ra.com/user_data/upload/save_image/files/bovopowatab.pdfIn PDF document text
    • https://konyaalotaksi.com/userfiles/file/xovuwiriginawixodepugimix.pdfIn PDF document text
    • http://www.cst.rnu.tn/js/ckfinder/userfiles/files/jegexevanepevas.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_off000505d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x505D6 11216 bytes
SHA-256: 39dbbc87ef0f721ca9ede1c3bc913e527e7864df53dcec2c6fb54d0809ecb1d9
font_01_sfnt_off00052000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52000 17632 bytes
SHA-256: 9681091dba6cb74e5f54d58a33707fec4f12e059c5d5f8d67261acfcec974939
font_02_sfnt_off00054dc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54DC3 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336