Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af46727d26eab94…

MALICIOUS

PDF

87.7 KB Created: 2021-07-01 14:08:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ac14eb93cba85bbc742a7d117a6dd456 SHA-1: b38d1d462766b7ddb3591d9c0892e688617ba1e1 SHA-256: 4af46727d26eab945c95beaf53ceaad1c913c7bfd41832b101a765c3ad1eb1ff
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of a 'download' button lure further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://laborke.ru/uplcv?utm_term=stomach+ulcer+extreme+fatigue PDF link annotation
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/8ef61b3dbee045f1df267530d5a98eaf/97028305663.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609ad39f37035---lalezetifapomegeguma.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608e2a0e0c31f---rezisu.pdfIn PDF document text
    • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/cbaec0b817558cadc0dab7118b8ce397/wetabumobap.pdfIn PDF document text
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/ktqjahl10fcdk0b7lmjheevut3/vemusakop.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/2kd34fclj547fmk3oskr6p4912/24115508228.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160871e6baa7fc---ruxoxuvekuzupaweto.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/49963013742.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/eh4g69fufsfpaq9qj165nrcqvo/89751378122.pdfIn PDF document text
    • http://leebyunghun.kr/new/upload/board/files/62199069257.pdfIn PDF document text
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/22d7a3d531a6fb7f41cf878ab7dbcbf0/53686010803.pdfIn PDF document text
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/ca1c69c8652352c37c32ef4d59346bc4/ninobubovowiwomonos.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/9a401748b81d4ae4e84e980b1efa6214/logisukopuligidujore.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/pqp67b9oet1m97q6rlmh25bms2/murupi.pdfIn PDF document text
    • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608943a548965---56892057492.pdfIn PDF document text
    • https://healthmatters.me/userfiles/file/38209750665.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/ccffb201b240835d97882595713eca45/gapesi.pdfIn PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/a27340967eaa6c35035e4f840b232ddc/31304057038.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/simalisuxaxa.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/f0e91le56uptgu2ln55hc26d38/mixuri.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/f49cf72215195c01410ad1739225b139/61153246078.pdfIn PDF document text
    • https://ukmalayalamnews.com/userfiles/file/zejop.pdfIn PDF document text
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/18395a194d87518053886657d76c5a2e/vuguzex.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095c6ce882e7---7334398369.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/pgas72nkbjc1ttv0s40cvkir7h/24312854047.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_off0000f3e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E4 10788 bytes
SHA-256: beee3a8f8db0c2a597ddaa075e5401ce0a10077e27909ee8e144017453a3a386
font_01_sfnt_off00010cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CC7 17148 bytes
SHA-256: c09ff75efab88a65fe93313c33034e77e1919a8bcd3bc01970d091c8af0dbb97
font_02_sfnt_off00013961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13961 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.