Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f31d6fb3e854159…

MALICIOUS

PDF

374.3 KB Created: 2022-03-01 13:10:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-03
MD5: 04bf0dbc75b09ce01ea4acde631a2434 SHA-1: e4a9b976dcd877d0a3e11d9748da8a41c49111e2 SHA-256: 5f31d6fb3e854159ac6b6691c9854b336329ec7f419f283ad74f85abd3b09081
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5061

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://norin.co.za/XSRYdR1H?utm_term=bwv+999+sheet+music+guitar PDF link annotation
    • http://citra.cl/userfiles/file/34457691446.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16210afa9b94a6---girekivedolur.pdfIn PDF document text
    • http://albina.jp/kcfinder/upload/files/nemuwipugudopemok.pdfIn PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/5f79ae98b04f59e3afd3a86e1f1fb958/71739525937.pdfIn PDF document text
    • http://www.ztc.hekko24.pl/panel/kcfinder/upload/files/19937172426.pdfIn PDF document text
    • http://sweet-sugar.de/images/uploadedimages/file/wezuvoja.pdfIn PDF document text
    • http://nifaelectronics.com/userfiles/file/44093172387.pdfIn PDF document text
    • http://countryclaim.cz/userfiles/file/53362275628.pdfIn PDF document text
    • http://advocaatindex.nl/images/uploads/29502209344.pdfIn PDF document text
    • https://somogyplusz.hu/files/62296693523.pdfIn PDF document text
    • https://roland-toys.eu/userfiles/file/95745593051.pdfIn PDF document text
    • https://inkxds.com/userfiles/file/vabegesadenatodajasiko.pdfIn PDF document text
    • https://antalis.emailingmanager.com/uploads/editor/file/74752663272.pdfIn PDF document text
    • http://master-vin.ru/files/file/75400725669.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16205c00156012---11428364579.pdfIn PDF document text
    • http://newworldss.com/uploads/file/kajunagitikixebudi.pdfIn PDF document text
    • https://vipbeachhouse.com/uploads/editor/file/puvutifodadekerubobanefo.pdfIn PDF document text
    • http://ceu-jgh.org/kcfinder/upload/files/ruropudijizepejo.pdfIn PDF document text
    • http://xn----htbccnijgu6o.xn--p1ai/kcfinder/upload/files/7667877608.pdfIn PDF document text
    • http://dkkarsin.pl/img/upload/files/2901472086.pdfIn PDF document text
    • http://paintmaster.hu/js/ckfinder/userfiles/files/73466286154.pdfIn PDF document text
    • http://yournamebadges.com/withyourdog/cms_uploads/file/rudepomugonudalakafedonof.pdfIn PDF document text
    • http://formasrl.com/admin/kcfinder/upload/files/62941547939.pdfIn PDF document text
    • https://stoneappeal.in/FCKeditor/file/47557545088.pdfIn PDF document text
    • https://smartbrand.ro/mm/file/lopije.pdfIn PDF document text
    • https://sieseam.org/userfiles/files/38961812409.pdfIn PDF document text
    • http://harlit.com/ckfinder/userfiles/files/20220219_090830.pdfIn PDF document text
    • https://huaku3c.tw/uploads/files/202203010045149691.pdfIn PDF document text
    • https://ladangmimpi.com/contents/files/xidomuziw.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620d771f468ce---4490540449.pdfIn PDF document text
    • https://deesudcoolingtower.com/userfiles/file/kabusorurina.pdfIn PDF document text
    • http://grafittipng.com/userfiles/files/kofopebisesov.pdfIn PDF document text
    • http://goldcoil.com/uploadfiles/files/poxulifekizoxeko.pdfIn PDF document text
    • http://park-seversk.ru/other/js/ckfinder/userfiles/files/28137369900.pdfIn PDF document text
    • https://a-1commercialkitchenservices.com/ckfinder/userfiles/files/digulivuroxewuzobipotato.pdfIn PDF document text
    • http://studiotecnicofrisoli.com/userfiles/files/zuxizevudaraniwuki.pdfIn PDF document text
    • http://ozdoby-betonowe21.pl/Upload/file/25928878939.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/180903182634.pdfIn PDF document text
    • http://apartamentgizycko.pl/files/file/92054034984.pdfIn PDF document text
    • http://ipea.kr/userData/board/file/tumuvi.pdfIn PDF document text
    • http://reputesystems.com/app/webroot/uploads/files/85406060115.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_off00053ce4.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00053ce4.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53CE4 10880 bytes
SHA-256: 432d162df6fd189213a61c18a8ecfcab950ae30b2913cc8270793c14b0ce8829
font_01_sfnt_off0005562f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5562F 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00056d4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56D4C 21548 bytes
SHA-256: be87e7b7a41a37a5457a27f285062a03ade19dee4fffdeaeb3ba83b795d8a1d4
font_03_sfnt_off0005a5de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5DE 9972 bytes
SHA-256: 39d4d91a1fcbf8afb859b463e5c68d78110674ede80ef9edcf5185ec2bbcc311