Malicious PDF — malware analysis report

Static analysis result for SHA-256 445dea7c844481ea…

MALICIOUS

PDF

335.0 KB Created: 2022-02-28 03:05:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 8bdb146d146173809012c43d40f5b7c2 SHA-1: 4c06e89eca5b79647d72d2adf935f5cf0178be44 SHA-256: 445dea7c844481eabc0c1c3a9d873c624bb3ab782d9d382dd7d6749618ad37f3
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. The heuristics point to an SEO redirector link, likely used to lure victims into downloading the malicious PDF under the guise of a free download, such as a user manual. The presence of multiple URLs hosted on compromised WordPress sites further supports the phishing and malicious distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6677

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=bmw+x3+2013+user+manual PDF link annotation
    • https://ezgoe.com/10005001208290177/ckfinder/userfiles/files/xazimamiwizubapuriwajitaj.pdfIn PDF document text
    • http://vervesimuhub.com/userfiles/file/3838315884.pdfIn PDF document text
    • http://bgindus.com/t/tutorfirm/uploads/ck/files/zuxotazozudaxu.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160df36af53f12---2780039682.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/7ee0ed1bc7dda76b9d35a536c86a660d/gurujalovudomepuzepipovev.pdfIn PDF document text
    • http://wimborst-ceramics.nl/ckeditor/ckfinder/userfiles/files/73129038036.pdfIn PDF document text
    • http://1qjd.com/upload/files/2021-10-22-21-27-15-039Li9MF.pdfIn PDF document text
    • https://www.ijdsir.com/ckfinder/userfiles/files/robudof.pdfIn PDF document text
    • http://medianet2000.net/amm_prod/image_news_popup/file/12789508742.pdfIn PDF document text
    • http://emannsltd.com/userfiles/nikokeminig.pdfIn PDF document text
    • https://oxfordjsr.com/userfiles/file/67282716847.pdfIn PDF document text
    • http://hytechcommunications.com/userfiles/file/36341363821.pdfIn PDF document text
    • http://association-femmes-relais-aulnay.communication-pro.fr/public/1160/contenu/file/pebunetupizo.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/161e278bacf79d---5623778084.pdfIn PDF document text
    • http://theeultimatenetworker.com/ckfinder/userfiles/files/43863259476.pdfIn PDF document text
    • https://madeinstlucia.com/userfiles/files/lejunururomudaxoxata.pdfIn PDF document text
    • https://888nv.ru/userfiles/file/worapizewuso.pdfIn PDF document text
    • http://signauction.net/userfiles/file/85113175749.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161eb13c13a9bf---52015195452.pdfIn PDF document text
    • http://st-johnson.com/Uploadfiles/files/36693647121.pdfIn PDF document text
    • http://problemconsulting.com/img/download/files/99320805244.pdfIn PDF document text
    • http://busto-wl.gattinonimondodivacanze.it/themes/userfiles/files/gowofopazobur.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/2e74914n5dllsg4jk5fq50ln66/24250813961.pdfIn PDF document text
    • http://ledseoul.com/userData/board/file/33348405243.pdfIn PDF document text
    • http://888spirits.com/userfiles/file/gigonamelowigawelapa.pdfIn PDF document text
    • http://re-media.ru/foto/ck/files/zuzinu.pdfIn PDF document text
    • http://adbuffalony.com/uploads/files/55413153701.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/161ae5bfac1d29---wixexenuvemosaw.pdfIn PDF document text
    • https://www.kensetusokuho.jp/kcfinder/upload/files/20399007539.pdfIn PDF document text
    • http://tortsurprise.ru/upload/redactor/files/zadebowifaposopenoxepotir.pdfIn PDF document text
    • http://z-i-f.ru/userfiles/file/xowexikajezewabadefaki.pdfIn PDF document text
    • http://bonsite.nl/phpcmsys/file/sazobom.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612948b8d78f6---fabunemisojeju.pdfIn PDF document text
    • https://dobre-akce.cz/media/files/file/27183771069.pdfIn PDF document text
    • http://handypipe.com/upload/mavufe.pdfIn PDF document text
    • https://johanbjerke.se/userfiles/file/kawibidiwaguxiwimi.pdfIn PDF document text
    • http://birizgardenhotel.com/userfiles/file/33545248388.pdfIn PDF document text
    • https://wemservice.com/ckfinder/userfiles/files/44553965261.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_off0004c8a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C8A2 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004dfbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DFBD 19172 bytes
SHA-256: 8fb98d9cfe0b191936a701276b4b8146debdbc30e2fcf266d12cb4b7eef2fe00
font_02_sfnt_off00051222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51222 10764 bytes
SHA-256: ec2308de7dfd8ebd012a5071428474b4f66db40a1f807bb8725773fd247385f1