Malicious PDF — malware analysis report

Static analysis result for SHA-256 0230c7e7a463ed38…

MALICIOUS

PDF

95.4 KB Created: 2021-06-30 18:09:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 7bba209c755af2b889dd946ae4e58eed SHA-1: f4e3ce21f84e608f06ac3fa6bfea1afed9b44680 SHA-256: 0230c7e7a463ed3847b3174c2988cd689e2436ec7318ad816e1a2a72856324fe
264 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document employs social engineering tactics, specifically luring the user to install a browser extension or provide sensitive recovery secrets. It contains embedded JavaScript and numerous external links, many hosted on compromised WordPress sites, which likely serve as downloaders or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://crysiq.ru/uplcv?utm_term=cold+turkey+blocker+review PDF link annotation
    • http://eko-inwest.eu/upload/file/nomesojirasixubus.pdfIn PDF document text
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/82853cf6e7cc86d5ab40630b8dcef98f/160386881.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/195fc1914927a5cc951c6f661df40624/27141006064.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/98e245d25f12bf8a9a861a739838cd22/40495069103.pdfIn PDF document text
    • http://cementfeet.com/userfiles/file/nelatolameputak.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/92f913192305bdf9a7c9b2e383589a34/jakuxakevim.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607604490f28b---8996250379.pdfIn PDF document text
    • http://bhavalaya.org/ckfinder/userfiles/files/61664816277.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cb524b3d774---bevufomugobavok.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160b774f717703---80741335020.pdfIn PDF document text
    • http://simonide.org/userfiles/file/kolesuzunefibufor.pdfIn PDF document text
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160766f200819f---wakotesolubatimi.pdfIn PDF document text
    • http://all-pass.com/folder/editor/file/45005378341.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/df136eb652d4f515ac99f4fcd3d6aeb1/41232077884.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/7ujdbegs4dd1dh0mgjht4qg6f1/49437587397.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/tmv20u9apt60ta69h8m6qukpv2/45468010526.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd5838493b---fawataxavinir.pdfIn PDF document text
    • https://kompaspt1.com/contents//files/32905371172.pdfIn PDF document text
    • https://hosvagyok.hu/userfiles/file/ravulagosexotaretuzemide.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2cc69281b6---99325767446.pdfIn PDF document text
    • http://blow-w124.com/js/upload/files/76729306419.pdfIn PDF document text
    • http://tokstar.com/_UploadFile/Images/file/bevewu.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/d650f7eb546bd8bcf95d81c0a21d6825/xaxapubigajuligogetikoxo.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d39e6e199fa---27873509734.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F00 18580 bytes
SHA-256: 7d748c16e9212b8025fce3301c09a656664c35681d4ca24fb88b65cde7b9e8e7
font_01_sfnt_off0001401d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1401D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15834 10556 bytes
SHA-256: fffcb30be307f7dc4fe87834a6b058248cca0ed110c5a71e0b412977cbf3784c

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