Malicious PDF — malware analysis report

Static analysis result for SHA-256 50500a9aa3354223…

MALICIOUS

PDF

66.5 KB Created: 2021-06-22 16:46:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b9c7806a035cea554e0c3bc88a59b082 SHA-1: 924b95654ddb9318491b36d9abe27a9655166416 SHA-256: 50500a9aa3354223b62a549057322c6d7d8f32d5566c16eff8c181c3f54dfa21
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution T1059.001 PowerShell

This PDF document is flagged as malicious by ML classifiers and ClamAV. It contains a 'clipboard command lure' heuristic, indicating it likely instructs the user to copy and paste commands into a shell. The embedded URLs, such as 'https://garglob.ru/uplcv?utm_term=install+drivers+windows+10+manually', suggest a phishing or malware distribution attempt. The document's structure and embedded links point towards a phishing lure designed to trick users into executing malicious commands.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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
  • 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://garglob.ru/uplcv?utm_term=install+drivers+windows+10+manually PDF link annotation
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b1aa4a1c932---92447108271.pdfIn PDF document text
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608244bea4b87---22889963520.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b58545d59af---futivinudijegega.pdfIn PDF document text
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/b37c9c058e503edd442f3cbdf12798aa/xorusimewojatojo.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/ede3af5c1ec09a4a110243d719c8b503/ruzulu.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3d52a54bd7---92749074800.pdfIn PDF document text
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607e8b7bb3307---pewasavuravadosefavonufo.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16091d984b682d---duvubosuwitetexoputitogig.pdfIn PDF document text
    • http://analogsys.com/uploaded/file/1252190843608ee4dcde2c7.pdfIn PDF document text
    • https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088805b511d0---14331204673.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a382cdbe0cb---22249843753.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/74c5b7d8b29bd49ad30180d22edf4af2/tisalatamiz.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160894fa73d798---jujixukol.pdfIn PDF document text
    • https://bda.ch/ckfinder/userfiles/files/davejifitepotisaravegav.pdfIn PDF document text
    • http://haki.vn/uploads/files/didenuvegikabugimazovupe.pdfIn PDF document text
    • http://assushop.com/userfiles/assushop.com/file/kigepibugavofisixunux.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/vitewa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC393 5356 bytes
SHA-256: fe31d26744973ed13682c75b9bd2f1a84de84e067b0855d98ec16d066dda8706
font_01_sfnt_off0000d5cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CC 11116 bytes
SHA-256: 3f8675dc5c7f38ad8f9955f4b69ed9813a1be2d2742297d2f5db75385216e1a6

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