Malicious PDF — malware analysis report

Static analysis result for SHA-256 6267b5e924eff346…

MALICIOUS

PDF

82.8 KB Created: 2021-09-05 05:27:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 0c0f980b8115068ab8dd06450e34de5a SHA-1: 035ebc6f4217a4a668c72db21eccbb742a15eb87 SHA-256: 6267b5e924eff346e771fc58a56df4b9c1cedb1a50517c3cf7678c431b143c9c
204 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript and multiple URLs pointing to potentially compromised websites or disposable hosting. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicates the document likely instructs the user to copy and paste commands into a shell, a common tactic for executing downloaded payloads. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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
  • 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 http://a-kamen.com/userfiles/file/kasofigobe.pdf In PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160bd92903a74c---buturevodat.pdfIn PDF document text
    • http://shiinamotors.com/js/upload/files/mexinevogemedodujuwuwogol.pdfIn PDF document text
    • https://mtestbd.com/assets/uploads/files/rafili.pdfIn PDF document text
    • http://codemessaging.net/ckfinder/userfiles/files/25322516731.pdfIn PDF document text
    • https://www.gico.ge/ckfinder/userfiles/files/81458007778.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/81164448026.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/161025bd61c1a5---gozurugigiga.pdfIn PDF document text
    • http://vodova51-53.cz/files/24554768016.pdfIn PDF document text
    • https://hoavily.com/uploads/files/zidixofezibadetuwoxin.pdfIn PDF document text
    • https://dutchfansitenetwork.nl/ckfinder/userfiles/files/vudalatofugisofotamikedu.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/acvd88itfsul9gqmuqau74loos/ledosemugabexilazu.pdfIn PDF document text
    • http://smit-electronic.hr/upload/datoteke/11153027936.pdfIn PDF document text
    • http://zhouzhuanx.com/v15/Upload/file/2021881817278402.pdfIn PDF document text
    • http://studioarchterreni.it/userfiles/files/jitobudufunotenifobed.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610c504917b29---12327102384.pdfIn PDF document text
    • http://battlegrouponline.com/app/webroot/js/ckfinder/userfiles/files/61090071121.pdfIn PDF document text
    • https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab41c420ae---1738033621.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/01273d1d05f91c4b17bd3aba5af35ed5/depikuxugegedazu.pdfIn PDF document text
    • https://alihuata.com/userfiles/file/83278924955.pdfIn PDF document text
    • https://boyanbolyarski.com/userfiles/file/36414359371.pdfIn PDF document text
    • http://www.kroonzuivel.nl/ckfinder/userfiles/files/lubujidenovakev.pdfIn PDF document text
    • http://sewakendragroup.com/userfiles/file/fokezeberodakanovisusuk.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8a7a537a11---74471795841.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=qpdf+remove+restrictionsPDF 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

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_off0000e0d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f8e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E8 10700 bytes
SHA-256: b23243de5cb1157862ef609765555d6296e17f78d939937e1b106552e97a5095
font_02_sfnt_off0001118d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1118D 17116 bytes
SHA-256: 3712e590a1a9644b82fef30e2c3713889e185273cbbc58f8be91a5044f0660ab

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