Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3080e391ab677f…

MALICIOUS

PDF

81.7 KB Created: 2021-09-01 13:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: d2f34be8b89f963a9f18ab7834c2815d SHA-1: 897c4d182e16c1c9778e2418dc326f26b01a5253 SHA-256: 4e3080e391ab677f20538abeb1b874e991751587bae6312a927550373306d26a
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://archism.ru/uplcv?utm_term=use+of+multimedia+for+teaching PDF link annotation
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/7869966a4d6f8080f6c0c7c5b98c6a9c/33353538828.pdfIn PDF document text
    • https://gulceoyunlar.com/calisma2/files/uploads/27549482033.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160853174afad9---89616372443.pdfIn PDF document text
    • https://songiadahoaian.com/upload/ck/files/74162170147.pdfIn PDF document text
    • https://xosobacninh.vn/webroot/img/files/pivomorazuravezur.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608020150d70a---43018494502.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160f83001357bc---siluleliwelezeloxigilugit.pdfIn PDF document text
    • https://asthasupermarket.com/userfiles/file/4019217000.pdfIn PDF document text
    • http://brixtontaxi.com/survey/userfiles/files/fivukonelupisomup.pdfIn PDF document text
    • http://pensionpoint.cz/userfiles/files/xisukikagum.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/7f877f892e88e9634ffe787d8b5a9fff/zugusexufow.pdfIn PDF document text
    • https://keralatemples.info/ckfinder/userfiles/files/tuxijojajomuwadima.pdfIn PDF document text
    • https://www.hinkler.com.au/application/third_party/ckfinder/userfiles/files/botekapekefoda.pdfIn PDF document text
    • https://gtselect.fr/ckfinder/userfiles/files/dosinugenetud.pdfIn PDF document text
    • https://autotrans911.com/thread/admin/uploads/file/nusijavozutut.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f30b4f44c7a---44613874440.pdfIn PDF document text
    • http://yonseri.org/userfiles/files/3409609269.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/7eobeo7p9dd66n82g11tr2vung/kelenalinuvuvadatiredame.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/16079d74617382---33893179115.pdfIn PDF document text
    • http://zetrade.cz/userfiles/file/wuxomagotegobuletazesaxi.pdfIn PDF document text
    • http://losmarinoslanzarote.com/marinarubicon/admin/file/64853289940.pdfIn PDF document text
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/ce61e36222384ade1b62a5d1e3ab46b9/fibarowudutobotowamiral.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_off0000dbb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f3c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C5 16896 bytes
SHA-256: a3e00f959964028f301751774a433b93aada2b14b9e25b12e795e1fb60f09065
font_02_sfnt_off00011fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD5 11028 bytes
SHA-256: bd68d3735f14a4ba4148095861382e61110625fa6ef31cc8a9efcc86cb56b90d