Malicious PDF — malware analysis report

Static analysis result for SHA-256 05f5565db51f4843…

MALICIOUS

PDF

116.9 KB Created: 2021-06-25 21:10:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: fed44411c9f26644b282263bcb84861b SHA-1: 27ab38736610b2ec46cf01c1735f2ac9a7195cae SHA-256: 05f5565db51f48436d7697b8b1b9b9f3f0887b046f76a8a5f611550435f5b321
156 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is identified as a link farm, with many links pointing to compromised WordPress upload storage. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution through these links. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9676

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
  • 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://ketchas.ru/uplcv?utm_term=shawn+flynn+bendy+and+the+ink+machine PDF link annotation
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c92889b8a00---8453322014.pdfIn PDF document text
    • https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/f8f07cfdc20e248179a6939cb947cb93/72687275035.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/b5b72b9c50838cb08b78f5e3b7172f1f/moposufamawufawajimomeb.pdfIn PDF document text
    • http://dallassymphonyleague.com/clients/1/14/14bb4a025281f1a32078cb68571f7cf3/File/xagozosuxizexapewazovo.pdfIn PDF document text
    • http://labonguyenhoang.com/img-chamthi/files/76535293700.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//ruloginekidujiridejewe.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/0565337c4f4e1c951df0d73038a6877d/22806080686.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/g8qjh5ic7nbbbds99v6kiv9juj/60627188394.pdfIn PDF document text
    • http://ashioke.com/images/library/File/topenapinojeguteduwof.pdfIn PDF document text
    • https://advantagelic.com/singhania/downloads/file/92064811203.pdfIn PDF document text
    • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083dc1778cd7---temuvugisiwixoraxazobarix.pdfIn PDF document text
    • http://angelcabrera.com/FCKfiles/file/jabewalapaxepelizovaniri.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/334l6corgc65d538e6ttt2g25f/japuzazanefewitolizoke.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076936dd380f---toralezenije.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/0a7140bed548acc512e2996cab9eb16d/bonetir.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/c0318b668de0130bf23db40155f6d6b8/9431475431.pdfIn PDF document text
    • http://xn----9sbbnbtte4cyg.xn--p1ai/ckfinder/userfiles/files/63334683757.pdfIn PDF document text
    • https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef8bb2e51b---82598803763.pdfIn PDF document text
    • http://sakaryakasaplarodasi.org/userfiles/file/giwinigoderixuwoton.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/jehckk149rikrrrsuc4j3jv804/43087681216.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/034f1e2d0be9dfd81851278a23a44080/wozomubimijolajofel.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160773d2dcaf0b---bivalanisoju.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/a0023c3160095d31f2dfae770033edc7/laranubere.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000144ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144CE 10860 bytes
SHA-256: 970947b444e6e34b33ee0abe3e86ff1e36c8fc53fb0152cb5c8f38283bcb5ac1
font_01_sfnt_off00015dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15DC6 18744 bytes
SHA-256: dd68ea07c7d7aee6180b34100bd806c522f1b57912c4291325b08fdc1487ece2
font_02_sfnt_off00018dc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18DC8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001a5d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A5D9 16660 bytes
SHA-256: ec780388f90f6ef4e41a29ed737bc87b5b78357963c3c45f7635b601a2195487
font_04_sfnt_off0001bd44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BD44 1788 bytes
SHA-256: 7e909db6473423696c7a0a805def3366eada2c8325e465ac3ce0406b5880d5af

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