Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8d1e62eb2c8873…

MALICIOUS

PDF

463.7 KB Created: 2022-02-07 16:54:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 379ac672b31f91019a58a295082a3bdf SHA-1: 4d28acc27c7cc3969d711087d5731a6ac9760937 SHA-256: aa8d1e62eb2c88732203fe234d9d74b61a62cd597701df0295df8b53e3f19927
184 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4057

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • 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=diabetes+insipidus+guidelines PDF link annotation
    • http://www.groupkms.com/ckeditor/kcfinder/images/files/51702167537.pdfIn PDF document text
    • https://hinodanang.com/uploads/image/files/29439217131.pdfIn PDF document text
    • http://wawabed.pl/uploads/userfiles/file/58421890541.pdfIn PDF document text
    • https://sapsda.com/SapmaUserfiles/file/bopozazakurawonilito.pdfIn PDF document text
    • http://celyroknaterase.sk/editor_uploads/system/files/fakamot.pdfIn PDF document text
    • https://5udua.com/contents//files/1673834924.pdfIn PDF document text
    • https://linlinline.biz/js/ckfinder/userfiles/files/54571947707.pdfIn PDF document text
    • http://sanzmendia.com/userfiles/files/fexufopavekorumixe.pdfIn PDF document text
    • https://loonbedrijfschimmel.nl/userfiles/files/67628245382.pdfIn PDF document text
    • http://kabaretyimpresariat.pl/Upload/file/46721371654.pdfIn PDF document text
    • http://marketypik.pl/zdjecia/fck/file/vomejewerigoj.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/595b917b0bf0b420d53e22c7923e9e88/tikalenibakokunida.pdfIn PDF document text
    • https://menu2uplus.com/images/file/ruzimuti.pdfIn PDF document text
    • http://bolyai-gyermekotthon.hu/files/files/57919007196.pdfIn PDF document text
    • http://phuwangnam.com/user_file/file/vegujafeze.pdfIn PDF document text
    • http://lidaoxc.com/upload/files/9818447629.pdfIn PDF document text
    • http://ciccioinpentola.com/userfiles/files/ratufesatefawizakejisit.pdfIn PDF document text
    • http://eshs.cz/www/kcfinder/upload/files/60471925898.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1615bcf19e171f---22476278523.pdfIn PDF document text
    • https://ww150007.linebot.net/upfile/files/20211116123622.pdfIn PDF document text
    • https://himalayanespresso.com/espresso_ckfinder/userfiles/files/vidarebuwiwewilimefokag.pdfIn PDF document text
    • https://tepatsasaran.com/contents/files/jofupi.pdfIn PDF document text
    • http://contextuae.com/resimler/files/63989929479.pdfIn PDF document text
    • http://spbmedax.ru/sites/default/files/uploads/borobusunilibevew.pdfIn PDF document text
    • http://kanalizace-ul.cz/userfiles/file/95249795053.pdfIn PDF document text
    • http://zmksk.ru/userfiles/file/jikixatigitesolesud.pdfIn PDF document text
    • http://bogaarchitetti.it/userfiles/files/54823393597.pdfIn PDF document text
    • https://vatlieuchongnong.baohohoanglong.com/userfiles/file/61970731561.pdfIn PDF document text
    • https://polenhosting.com/calisma2/files/uploads/40595926863.pdfIn PDF document text
    • https://www.sterlingsez.com/ckfinder/userfiles/files/tovigugutupe.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/16110d7bd19f39---pivaxevawogoza.pdfIn PDF document text
    • https://www.domaine-vrignaud.com/ckfinder/userfiles/files/gojalumododawuwuj.pdfIn PDF document text
    • http://cattaneoarchitetti.it/userfiles/files/93213024727.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/f5c1dfac21775920aff3dbfbd3075801/repuninutize.pdfIn PDF document text
    • https://www.cygnusdvlp.in/nitdurgapur/uploads/editorUploads/userfiles/files/26444163721.pdfIn PDF document text
    • http://poiskvod.ru/images/file/78809421303.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619bfa4df3731---94247165964.pdfIn PDF document text
    • http://tnet.site/kcfinder/upload/files/50036448431.pdfIn PDF document text
    • http://yuanjen.com/ckfinder/userfiles/files/85810840730.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_off0006d4fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4FC 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0006ec1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC1C 10588 bytes
SHA-256: 34ad1787873e4b43e5804d86c6b4cb8bde78f665badfdc9cd92b7dab4db5153b
font_02_sfnt_off000703f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x703F6 16464 bytes
SHA-256: 03a97a46615d4776f05b0cff32c9e4584a25bef7591641362b898ee8dc7cb764