Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ad765f32e923cf5…

MALICIOUS

PDF

317.1 KB Created: 2022-04-15 09:06:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-20
MD5: a4dea5ae8bd8664f5d3591b7ee665ad4 SHA-1: 73996e78e7b59d559ea67b741b09e5af77ecd59e SHA-256: 9ad765f32e923cf50c007cf1247798b865915157cab6e7aa88b691bd9ba490b6
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple heuristics indicating it is a phishing lure, specifically using an SEO redirector to a compromised WordPress upload. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body and extracted URLs point to a phishing campaign aiming to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9337

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fecuq.co.za/XSRYdR1H?utm_term=glencoe+health+book+chapter+review+answers PDF link annotation
    • https://advokati-ufa.ru/uploads/files/rutirowumiredajube.pdfIn PDF document text
    • http://icoenergia.com/userfiles/files/vamajomapizesav.pdfIn PDF document text
    • https://asid.rw/userfiles/file/27093555847.pdfIn PDF document text
    • http://go-trec.com/wp-content/plugins/super-forms/uploads/php/files/8csjaol5rgs26dv88mljguprct/9719557809.pdfIn PDF document text
    • http://bazoolwddd.specialty-match.com/upload/files/gasabo.pdfIn PDF document text
    • https://delevesep.weebly.com/uploads/1/3/4/3/134371082/9634962.pdfIn PDF document text
    • http://bireyseldegisim.com/U_Media/files/kitefusaj.pdfIn PDF document text
    • http://amandamaitland.com/images/file/weridawelopuvalixutuw.pdfIn PDF document text
    • http://nano-vip.com/ckfinder/userfiles/files/dunotuxufekage.pdfIn PDF document text
    • http://matchedtubes.de/userfiles/file/63717837864.pdfIn PDF document text
    • http://paradisetnl.com/FileData/ckfinder/files/20220224_89BC6F51D73B01F3.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/mvs3fd78mh9qs3233abj11begb/befekepupajilu.pdfIn PDF document text
    • https://stancijanegrin.com/UserFiles/files/77618306872.pdfIn PDF document text
    • http://abovomedia.hu/_user/file/58859137090.pdfIn PDF document text
    • https://dunefofitibo.weebly.com/uploads/1/3/4/6/134608320/ratifudepiwaxemok.pdfIn PDF document text
    • http://bacvietexpress.com/upload/userfiles/files/52948895007.pdfIn PDF document text
    • http://ks-system.co.uk/ckfinder/userfiles/files/bazumajemexojededuxev.pdfIn PDF document text
    • https://nirilepewo.weebly.com/uploads/1/3/4/6/134657632/615f38bea.pdfIn PDF document text
    • http://sigmabhp.pl/userfiles/file/39127232045.pdfIn PDF document text
    • https://mujunuduxur.weebly.com/uploads/1/3/5/3/135327440/19b66d4feecefeb.pdfIn PDF document text
    • http://phongthuyphatloc.com/luutru/files/78757367041.pdfIn PDF document text
    • http://senkardeslerkereste.com/kcfinder/upload/files/zapejum.pdfIn PDF document text
    • https://mobuwutibuw.weebly.com/uploads/1/3/0/7/130739624/6932b0d.pdfIn PDF document text
    • https://classement-rangement-dossiers-documents.fr/app/webroot/kcfinder/files/lakupekijigira.pdfIn PDF document text
    • https://drhuanghair.com/uploads/files/202204082231533283.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16208169c65d00---44043970468.pdfIn PDF document text
    • https://gabavogafev.weebly.com/uploads/1/3/4/0/134000006/puvakotuxino_wesolafiwuve.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_off00048083.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00048083.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00048083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48083 19852 bytes
SHA-256: ca18ef95509b069269cb9914f83b16e07d98e61d363f34c8b090914c5dce0dfe
font_01_sfnt_off0004b4a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B4A9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0004ccc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CCC0 10892 bytes
SHA-256: af9c2f0ee987ddaed8c317b1fd4b7ccfa3ed3fafb1346cd09b67ca17d94a5ab1