Malicious PDF — malware analysis report

Static analysis result for SHA-256 95d0d5c937718efd…

MALICIOUS

PDF

80.5 KB Created: 2021-09-08 23:54:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: b81eb11ff9d68a1e3d1f6a43a8140e94 SHA-1: 7acfd15182d4f90c1a6dc75dca2fe4a38965e476 SHA-256: 95d0d5c937718efd718c88b0dcbaa08f71f0af09d07015364138969306f6e620
196 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are hosted on disposable domains or compromised WordPress installations, suggesting a link farm designed to redirect users. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document's content likely prompts the user to install a browser extension or update, a common social engineering tactic. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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
  • 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.
  • 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://pixomot.ru/uplcv?utm_term=google+chrome+not+working+on+android+tablet PDF link annotation
    • https://haisanquangninh.org/data/dulieu/files/36000027479.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135c55ca78fd---dukezunegabevalozuxowip.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613726860b1d4---26477571416.pdfIn PDF document text
    • http://nedvizhimost-v-sharm-el-sheikhe.ru/uploads/files/59309330658.pdfIn PDF document text
    • https://pernambucoimortal.com/imagens/files/67777333769.pdfIn PDF document text
    • https://megatekspb.ru/sites/default/files/uploads/62487213940.pdfIn PDF document text
    • http://biplano.eu/userfiles/files/zefuzatituvonukujo.pdfIn PDF document text
    • https://tdemo.order-pro.com/ckfinder/userfiles/files/famelesigamitiwujodexedi.pdfIn PDF document text
    • http://yibetter.com/data/files/nesefaruvifozotuxarexokol.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/6a775af10246b3834271379cddf9b923/9862963879.pdfIn PDF document text
    • http://klick-tipp.info/ckfinder/userfiles/publics/files/tiwitatomizijugirafi.pdfIn PDF document text
    • https://virtualpulse.eu/UserFiles/file/3011656896.pdfIn PDF document text
    • http://majorpropertygroup.com/userfiles/files/50597592872.pdfIn PDF document text
    • http://sistarelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/39457873877.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/fozajuxurodukifirige.pdfIn PDF document text
    • http://miraesusan.com/ckupload/files/52625542545.pdfIn PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/nedofaxosigobuvofipuzu.pdfIn PDF document text
    • https://linkevicius.com/upload/galery/file/81225011265.pdfIn PDF document text
    • http://adas-muko.pl/photo/file/jowos.pdfIn PDF document text
    • https://minlinart.com/archive/upload/files/wewamum.pdfIn PDF document text
    • http://youandisagenix.com/ckfinder/userfiles/files/87853500660.pdfIn PDF document text
    • http://www.bluewhaleline.com/image/upload/File/80328698981.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_off0000d85b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD85B 11004 bytes
SHA-256: bbcbab53a1fccd699631bcf4426b29d01a7e2e825f16a8b8c95cace99a926333
font_01_sfnt_off0000f198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF198 16416 bytes
SHA-256: 4a37f27ef7fd10641a2053b3560396adb643398c440381bfb06209b14256aa1a
font_02_sfnt_off00011c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C15 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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