Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe451d1ff92e62ee…

MALICIOUS

PDF

87.3 KB Created: 2021-07-13 02:19:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 050bdd2484eb6069045ccb94eee3575e SHA-1: 51fb97e79f5ef68a3e2f2a8e3a84201e1c317ec8 SHA-256: fe451d1ff92e62ee9a914dfed5c10e6c03ad306470b99a9bcba6376e0f4f5999
196 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 a large number of links, many pointing to compromised WordPress uploads or disposable domains, suggesting it's part of a phishing campaign or a malware distribution scheme. The embedded links likely serve to redirect the user to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 7

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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 http://montaze.org/democms/userfiles/file/2990141655.pdf In PDF document text
    • http://xpressup.com/userfiles/file/zutikipug.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/be0e911267cc459cf88df9a2027734f7/tozusudew.pdfIn PDF document text
    • http://dachastyle.com/userfiles/file/35352250225.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/bif4nsqend7q4ac1rsbs8tlrat/wijovoveripizezovar.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160b02c489f4f4---winimenamipulovafaxu.pdfIn PDF document text
    • http://cokhixnktientien.com/Images_upload/files/65064964101.pdfIn PDF document text
    • http://benefielddarrenfordhicksunited.com/clients/2/21/2186b72972973349411f8b90e6071e14/File/jesowolapuvu.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/16085e6470561e---97787791755.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/ldmk616ur6tiqdo5duh4ngei6f/12059869491.pdfIn PDF document text
    • https://client-sms.com/ckfinder/userfiles/files/tikipatenizusanijenefaw.pdfIn PDF document text
    • https://irantruck.ir/data/file/xejaxix.pdfIn PDF document text
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/a955de921c248266c5af57c2c10b23c8/roxikiladananeralamegokuz.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d7132162795---xijulade.pdfIn PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/6de64fb506204de9e5df066f4bdd7c24/vejuwefalipol.pdfIn PDF document text
    • http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b468a8f64b---madaxobatera.pdfIn PDF document text
    • http://arebiatours.com/uploads/files/mixina.pdfIn PDF document text
    • http://homeopathyhk.com/files/devixifekikuvatazosaw.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/f3807f4e64cb382b07eea17344e609a5/lujaninojibigexenazo.pdfIn PDF document text
    • http://diversecityuk.com/userfiles/file/11207186458.pdfIn PDF document text
    • http://jinanxintiandi.com/userfiles/files/3602452388.pdfIn PDF document text
    • http://tamilannuaire.com/var/www/vhosts/vps296430.ovh.net/tamilannuaire.com/images/file/kawobizuloj.pdfIn PDF document text
    • http://hopkinshigh1966.com/clients/1/10/1054c114374c88b4a165e91103565d41/File/31847100549.pdfIn PDF document text
    • https://organicfertilizerproduction.com/d/files/48709192638.pdfIn PDF document text
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609fd8d9025ed---vakiwedusebur.pdfIn PDF document text
    • https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/e6a121f2f67fdc2e142c55412f9ae177/dutut.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/f5094e1cac69a5f493eac3fcf4c0dea4/korupubemiban.pdfIn PDF document text
    • http://bettaletroom.com/file_media/file_image/file/88389676384.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=new+kittens+hissing+at+each+otherPDF link annotation
    • 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_off0000f2ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AE 10620 bytes
SHA-256: 841438a5a876c8400c1bd941f851898328144d7421693aa1f06da38ea95ad1b5
font_01_sfnt_off00010b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B04 17148 bytes
SHA-256: 7301a7a68e6156d8f1de9c37c1f1d7b341076c9d50c344c9c2567f379ca6a8d9
font_02_sfnt_off000137ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137CA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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