Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dca63c2457c6b23…

MALICIOUS

PDF

430.2 KB Created: 2022-02-08 09:24:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: 5fd9ce7879ef6b6f42f7a851a54439e7 SHA-1: f92fd5f5aa6ce9289db5321171e091f9cf6641b2 SHA-256: 1dca63c2457c6b231f80fc8073a7cf2f3070b999302f458a5d5b242221d31b81
144 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.5000

Heuristics 7

  • 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.
  • 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://norin.co.za/XSRYdR1H?utm_term=enfermedades+alimentarias+pdf PDF link annotation
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/ec757cd2b76d86bacd4cbedcb043964a/mabupukozug.pdfIn PDF document text
    • http://www.centralperdana.com/file/romatudepituwuraku.pdfIn PDF document text
    • http://americasbestmanassas.com/uploads/files/nidumujepaf.pdfIn PDF document text
    • https://nepalaviationmuseum.com/userfiles/files/terijibumugapuwakowux.pdfIn PDF document text
    • https://www.apsar.es/assets_back_office/js/plugins/kcfinder/upload/files/22455736871.pdfIn PDF document text
    • http://africalegal.nl/userfiles/file/95966018208.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161514964848a6---gakefaxopaxi.pdfIn PDF document text
    • http://asu78.ru/userfiles/file/wogazofepiguzovemuvofa.pdfIn PDF document text
    • http://bulongvungtau.com/media/ftp/file/8669240008.pdfIn PDF document text
    • http://gzperson.com/uploadfile/files/91868912301.pdfIn PDF document text
    • http://y-mirai.biz/js/kcfinder/upload/files/46767133617.pdfIn PDF document text
    • http://diskacme.dk/images/upload/file/12687915237.pdfIn PDF document text
    • http://abcgsgeds.friendship-match.com/upload/files/lokikizibedodejudonazali.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/2ebc0c6b6f6f8079ba53facc593a0a6c/19579334503.pdfIn PDF document text
    • https://canevastoilestjean.com/upload/editor/file/pidogifoxexelifufused.pdfIn PDF document text
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/784882d4d23d7ca1c0856e5dd02f0a77/77969284672.pdfIn PDF document text
    • http://dakmoto.cz/obrazky/file/vovozedisolawafoxop.pdfIn PDF document text
    • http://bappeda-jepara.org/app/webroot/js/kcfinder/upload/files/91000390034.pdfIn PDF document text
    • https://ewt.cz/res/file/mebimitivak.pdfIn PDF document text
    • http://www.brickchamber.com/ckfinder/userfiles/files/bevepebusoxif.pdfIn PDF document text
    • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/4e4989f5f5039da6ee9c76616a769188/70605184053.pdfIn PDF document text
    • http://zjnep.com/ckeditor/ckfinder/userfiles/files/21951099848.pdfIn PDF document text
    • http://kaie.org/userfiles/file/20211111070313.pdfIn PDF document text
    • https://pmsp-me.com/userfiles/files/40796968034.pdfIn PDF document text
    • http://bbfederico2.net/userfiles/file/bexosudagoz.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/16191195c2387c---22448938301.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1611130784ef15---xexalukavorosiv.pdfIn PDF document text
    • http://acunambalaj.com/adenoto/upload/files/16154383224.pdfIn PDF document text
    • http://bippex.com/filespath/files/20211031180807.pdfIn PDF document text
    • https://ppkh.net/userfiles/file/83847740908.pdfIn PDF document text
    • http://naoshima-tours.com/images/blog/file/batel.pdfIn PDF document text
    • http://ludothequelancy.ch/kcfinder/upload/files/zurujidezupixuxir.pdfIn PDF document text
    • http://kompaspt2.com/contents/files/rikatawutusiwanoke.pdfIn PDF document text
    • http://msslink.ru/userfiles/files/xivokixitiwoteput.pdfIn PDF document text
    • http://hitplus.eu/userfiles/file/sanevuvenidarekarubovo.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_off00064cb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CB9 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000663d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x663D4 17508 bytes
SHA-256: 9b6395c8c7fd542188fde56490abad6e3d893ec7098e8364838e575c3b78b6b2
font_02_sfnt_off0006909b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6909B 10520 bytes
SHA-256: e01965b4c2770c8e8a73c17c7a9597679c2f9d51c360dcf39473d65f6eefd21b