Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5cd068453950e0…

MALICIOUS

PDF

95.7 KB Created: 2021-08-06 23:01:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: b2a64002517205bfd113eb5d77bf6c0e SHA-1: d7562061d92c8fab96612312cc79a3ea77ecca99 SHA-256: 9d5cd068453950e0627eec5bc32060e7c2cceba2725bdb7d43b5d8be3a703b02
196 Risk Score

Malware Insights

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

The PDF document is classified as malicious by ML models and ClamAV, and exhibits characteristics of a social engineering lure. It directs the user to install a browser extension or update, a common tactic to facilitate credential theft or malware delivery. The document also contains numerous links to external sites, some hosted on compromised CMS platforms, suggesting it may be part of a larger phishing or distribution infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/a50933e925ae8083be35a35ba69ebe91/14823955112.pdf In PDF document text
    • https://worldcastlive.com/userfiles/file/55921260774.pdfIn PDF document text
    • http://grandbarnettfamily.com/clients/a/a0/a01b80d98e57c38af56892ab55e7d82f/File/fovetidipomewaj.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/6faf9ed47726b3c80137d1817f272eaa/43280312419.pdfIn PDF document text
    • https://www.weldcor.ca/public/ckfinder/userfiles/files/rifodiburet.pdfIn PDF document text
    • http://indecomavo.pl/inc/falawabewigemogujirurefe.pdfIn PDF document text
    • http://geoodwierty.pl/files/file/jitunajedeb.pdfIn PDF document text
    • http://shsclassof1970.org/clients/872719/File/62855620576.pdfIn PDF document text
    • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/a2e1c79703d8e2d04fca108df13c35ca/piranigafivasuregujazupeb.pdfIn PDF document text
    • http://parkergeneralcontractors.net/userfiles/file/15966840408.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/0fe2a572455cb0f8790ad5ab580703d5/varoxozorinedeponupozoras.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609c9ee1ece47---83813971720.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c964e9d8229---lorilufolobidi.pdfIn PDF document text
    • http://oresteruggiero.com/userfiles/files/zisiwubowevaxas.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/bc568ec47b9685aeaef1e2a8130601ca/89297046099.pdfIn PDF document text
    • https://aedwea.com/upload/foto/rizusi.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160be15fcde102---82324371352.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b5ec3270416---zamina.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/o9clmrpik9nn0giplic9rfn1k4/13250401105.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/jmbc6cjat0grm395dv3mfssju6/nuxosejafekipirusuke.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/1mrl6716a1e08m7ibp9and6n06/72958833434.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16098d7bc71ddb---zetalezegaxolubifa.pdfIn PDF document text
    • https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/16092a98e3f336---sojuduzujis.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=how+to+change+default+notification+sound+in+samsungPDF 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f97a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF97A 16084 bytes
SHA-256: dae5038d748b2b7d89173d83a61ff0ceefc2856cc76f3bb6f5837745f88f8889
font_01_sfnt_off00010eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAA 11000 bytes
SHA-256: 05bdf6b44aea33a7db20dc158227df4fae17724eafc67546bbd556468e75573c
font_02_sfnt_off000127db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127DB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00013fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FED 17436 bytes
SHA-256: 5497a82d3db88b31ceaa0e0271fa7868ef41b442a5d8a70bf42816a404cf79b8

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