Malicious PDF — malware analysis report

Static analysis result for SHA-256 445aaf9d1bfce174…

MALICIOUS

PDF

326.1 KB Created: 2022-02-05 06:57:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 83fd80c67b7b53cd011a089782f8d623 SHA-1: f1368a7c74cb4325d627e688aeb6579e6ddf8761 SHA-256: 445aaf9d1bfce1740ddd082f96b612a49450fa01bc92b1f21da266031c0396b1
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. It contains multiple external URIs and a link farm pointing to compromised CMS uploads, suggesting a phishing or malware distribution attempt. The presence of embedded URLs and the use of a redirector indicate an effort to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7397

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://colod.co.za/XSRYdR1H?utm_term=christian+dating+questions+and+answers PDF link annotation
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/qcqj8icp29p2fvusr7qv6a4beh/xulegomozuvun.pdfIn PDF document text
    • http://honyi.tw/ckfinder/userfiles/file/17033329921.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161aeea27d0a86---42509501599.pdfIn PDF document text
    • http://vom-ragnaroek.de/uploads/file/8690014000.pdfIn PDF document text
    • https://lanna-flyingclub.com/ckfinder/userfiles/files/zatinip.pdfIn PDF document text
    • https://www.poole.ed.jp/system/ckfinder/userfiles/files/megizirijojid.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/16181ca62b070a---bafuv.pdfIn PDF document text
    • http://rs-entp.com/upload/file/kaposovusu.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/getusinulutikosanikezim.pdfIn PDF document text
    • https://kamarkosong.com/contents//files/54750024757.pdfIn PDF document text
    • https://kientrucmoi.com.vn/admin/kcfinder/upload/files/mozaxuxalokamoradizo.pdfIn PDF document text
    • http://bischofs-scheune.de/userfiles/file/purelusotomoxifoxu.pdfIn PDF document text
    • http://hanasushipickup.com/uploads/files/91181550430.pdfIn PDF document text
    • http://goddesshair.net/upload/users/files/8487177226.pdfIn PDF document text
    • http://lycee-elm.info/userfiles/file/86094616176.pdfIn PDF document text
    • http://boeschfamilytravels.com/clients/43210/File/65202366370.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618c06332501a---10248773227.pdfIn PDF document text
    • https://perfecthospitals.org/FCKeditor/file/lijuwob.pdfIn PDF document text
    • https://ph789.com/pinhsuan/files/file/difegupazuso.pdfIn PDF document text
    • https://rallstarawards.us/nbloom/fckuploads/file/73037801038.pdfIn PDF document text
    • https://idealist.ro/userfiles/file/dexonugasurediloposezu.pdfIn PDF document text
    • http://kasintorn.com/images/upload/files/kajabavini.pdfIn PDF document text
    • http://zoldjogsi.hu/uploads/files/nufajidajokebax.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/icge48nisuquarv04f9ibgbfg9/podax.pdfIn PDF document text
    • https://ceylanotel.com/firma/files/kejokoguvatukujimefapime.pdfIn PDF document text
    • http://www.dilipprabhavalkar.com/images/file/pijenukewizoxidiguri.pdfIn PDF document text
    • http://conomiya.com/images/uploadedimages/file/gajifekeseroxugowe.pdfIn PDF document text
    • http://96stone.ru/userfiles/file/dupokolebiw.pdfIn PDF document text
    • http://eia-edu.com/userfiles/file/bujugaxufijilekijusose.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_off0004ab4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AB4F 17712 bytes
SHA-256: f17de3175e5b8d8b1e37dc981d7e1bf7e03fff03e6fcbe70aed3e8c423bbb4fe
font_01_sfnt_off0004d995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D995 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004f0b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F0B5 10844 bytes
SHA-256: db76dac2ebd5a55a743430595ec7af04c269174c502c0726bc45b00a355923cb

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