Malicious PDF — malware analysis report

Static analysis result for SHA-256 0619691792291f6b…

MALICIOUS

PDF

97.1 KB Created: 2021-06-26 09:28:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: e3101d9cabf6585844e80967c1a98ddb SHA-1: df9187adc1d195d0abd7e06e7a239085173df971 SHA-256: 0619691792291f6b6e204cdfef43642607c6de1d376bf07a02f1c00c39b00320
236 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains multiple links to external websites, some hosted on compromised WordPress sites, suggesting it's part of a phishing or malware distribution campaign. The document also includes lures for clipboard command execution and password-protected archives, indicating an attempt to trick the user into running malicious code or bypassing security measures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://oniceh.ru/uplcv?utm_term=6.4+3.4+packet+tracer+answers PDF link annotation
    • http://xn--b1agjlwjc3g.xn--p1ai/ckfinder/userfiles/files/38008141455.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16086544fe5515---82384899108.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d1ec666ca---jemaritalupadowitiw.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/5ff2ef935fcd96a67441e7a5aad74263/59489954670.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ee0af3f107---tibumipegezobagazaxuge.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c064bceeeb1---likel.pdfIn PDF document text
    • http://hemeringen.de/ckeditor_ablage/userfiles/files/nevabex.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4eadad591---39554155749.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/215ef1ffe670672593a1ecf4505894ad/jijoxuvatiniwosov.pdfIn PDF document text
    • http://nowyhotelik.pl/userfiles/file/livarudexogewota.pdfIn PDF document text
    • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/uqchrgibhj442s7v0n88m15bb0/robimivixutok.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/5c3ce55cdfe1658d9b63ceb4f29772ea/85958995625.pdfIn PDF document text
    • http://artgraf24.pl/userfiles/file/fobimegemi.pdfIn PDF document text
    • https://charlesstreetvideo.com/userfiles/file/6322952499.pdfIn PDF document text
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/be6108394eedb0294636f9af109a1b34/22061430267.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/4pp5hq0o2eavk1tftuh38c7hg3/bewevokumen.pdfIn PDF document text
    • https://foundryindia.org/userfiles/file/10676186376.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4f37d8d348---42646367001.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/bpm41pv31a8tnfjg8g0ugnd9ff/76665379456.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/p22tvais02dqim0ateta29rmgs/dujigosizudomizonizekiva.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/dkj7bntr1qm669i4m1d5pbanr2/tafutixosibunuwomiwu.pdfIn PDF document text
    • http://chithanhplastics.com/uploads/userfiles/file/wikasunidalod.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_off00010905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10905 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001211c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1211C 10676 bytes
SHA-256: fb2dc7430cf6d44f5641d4c047b795913430e90859bbfaab59875b41280098da
font_02_sfnt_off000139d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139D7 24440 bytes
SHA-256: d191c3588eaf8886e533afe3b3035da82be393c251f30cf31532002f4ec7c938

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