Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4f48f84440fd424…

MALICIOUS

PDF

73.5 KB Created: 2021-09-24 02:24:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 05fe1dce7c8dcf5eeb1ac864c64822fd SHA-1: 9a60a4363579a4ed60a5b0b6323f519fbc09b7dc SHA-256: e4f48f84440fd4243df8c124ba5de9f7a75bafe88a4136def840f5b49c0fef6f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external sites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://oniceh.ru/uplcv?utm_term=the+sims+mobile+hacked+apk PDF link annotation
    • https://restaurant-kamkok.fr/img/Data/file/mijala.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614592b95f38c---767905058.pdfIn PDF document text
    • https://drjou-vc.com/upload/files/xebuninis.pdfIn PDF document text
    • https://webdatedepot.com/userfiles/file/bunoloroxogokopujox.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/605b49b291a59699fd7eea358b7bfc3a/37690776433.pdfIn PDF document text
    • http://metalzilemboeventi.com/userfiles/files/73879022842.pdfIn PDF document text
    • http://offerparts.com/upload/files/vedewoj.pdfIn PDF document text
    • https://rugsdirect4u.com/uploadedfiles/file/70790030986.pdfIn PDF document text
    • http://senseoftourism.dk/userfiles/file/pinekudajotabusinavuzak.pdfIn PDF document text
    • http://sanjarbek.uz/userfiles/file/zizetepevotiduxarageduro.pdfIn PDF document text
    • https://abzesolar.com/uploads/files/fidugekilusawuwupiliru.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/906b9757ad02716940ddc1adad6343cf/65151415115.pdfIn PDF document text
    • https://ajwatravel.com/wheelmarine/userfiles/file/lewaforetupujupoxewuzam.pdfIn PDF document text
    • https://cepatdaftargroup2.com/contents/files/21326817713.pdfIn PDF document text
    • http://castrolmintabolt.hu/images/upload/file/64059113390.pdfIn PDF document text
    • https://cottingham-group.com/cufiles/files/22013159749.pdfIn PDF document text
    • https://pmapmc.com/userfiles/image/files/kejumudud.pdfIn PDF document text
    • http://keyday.ru/files/files/fojawed.pdfIn PDF document text
    • http://fteq.ru/files/file/xokifufasotozufuwilulir.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1614231f675e5f---xexubajeze.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/2c77c6dcc7bc6ad08c6f369ba576a36f/60104412527.pdfIn PDF document text
    • https://littleitalypizzany.com/nbloom/fckuploads/file/72265890037.pdfIn PDF document text
    • https://mycocoa.org/images/upload/files/galarupaberozekifaz.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_off0000bb97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB97 17212 bytes
SHA-256: 312696a1005d7475c1603b3eab96c03cead148bc980471a8efc5c705490ac915
font_01_sfnt_off0000e7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10000 10672 bytes
SHA-256: cfcd12c8577943f07a7660a87d8739d97e44ae481753b0c918a4fb2d89d3e9f1

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