Malicious PDF — malware analysis report

Static analysis result for SHA-256 88bd7f2550f9c081…

MALICIOUS

PDF

311.9 KB Created: 2022-03-10 03:05:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: b13c02927e6f12ce6103953799c986ea SHA-1: 101bf79e3c0f2376a761c864aea6423a55e15c74 SHA-256: 88bd7f2550f9c08174c06a2152b208b4370ccfecc3b32292226a294dfd9195b8
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6972

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fecuq.co.za/XSRYdR1H?utm_term=business+card+template+vector+free PDF link annotation
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/161fe2874cbb8c---jozotusujoj.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620e093a60a93---30351361048.pdfIn PDF document text
    • http://forsheda.se/admin/kcfinder/upload/files/tavabejujebamatamemak.pdfIn PDF document text
    • https://robustbrakes.com/administrator/imagetemp/file/56252347600.pdfIn PDF document text
    • https://www.mouvancevoyages.com/public/kcfinder/upload/files/26253546144.pdfIn PDF document text
    • http://sinorarechem.com/upload/files/jovonofarizor.pdfIn PDF document text
    • http://delfosventures.eu/userfiles/files/93853503643.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16228f84fc3c27---gosobesoxi.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621bac9b20cab---3307038754.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/162162287d414a---17187176823.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/162081dd081f4e---gapovotefevirisa.pdfIn PDF document text
    • http://dui-antidote.com/images/userfiles/file/853053076.pdfIn PDF document text
    • https://momsgardenfoods.com/ckfinder/userfiles/files/16106298246.pdfIn PDF document text
    • http://aroma-es.site/yamituki-n/uploads/files/65028896412.pdfIn PDF document text
    • https://daotaolaixesontay.com/uploads/file/67838360205.pdfIn PDF document text
    • https://keiba-like.biz/js/ckfinder/userfiles/files/89993385029.pdfIn PDF document text
    • http://aibrpjoaae2.specialty-match.com/upload/files/revujupejewufu.pdfIn PDF document text
    • https://akvaguru.hu/user/file/denebitojufa.pdfIn PDF document text
    • https://ratco-hardware.com/Ups/files/78502328441.pdfIn PDF document text
    • https://flomogroup.com/upload/files/falivitapatafexi.pdfIn PDF document text
    • https://www.trungtammaychieu.com/ad-min/js/libs/kcfinder/upload/files/fufur.pdfIn PDF document text
    • http://hoachattn.com/image/files/zorabo.pdfIn PDF document text
    • http://creptiles.dk/userfiles/file/busomijodobanuxukesasotoz.pdfIn PDF document text
    • http://www.juniorcollege.cl/ckfinder/userfiles/files/lasovulixujejip.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/162285c1819cb8---24152026623.pdfIn PDF document text
    • https://quizai.com/uploads/files/2292233073.pdfIn PDF document text
    • http://i-p-p-c.com/ckfinder/userfiles/files/65841842123.pdfIn PDF document text
    • http://humanprojekt.lenti.hu/feltoltes/files/gubukurub.pdfIn PDF document text
    • http://schneider-glossa.ru/kcfinder/upload/files/76667114791.pdfIn PDF document text
    • http://www.colormotion.cz/UserFiles/file/rikexojujevuvesimenufal.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 extracted file (font_00_sfnt_off00046f08.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00046f08.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00046f08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46F08 18476 bytes
SHA-256: 111742562b18970f2ec0c6ab6891f9fad405d99e24431b82b4f97da9a0b779aa
font_01_sfnt_off00049f75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49F75 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004b695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B695 11000 bytes
SHA-256: 33f103fc0c9a8e75364087451d57a7889424727b17406ac3913a3e64de0ef3a0