Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa2c14a39cd62d52…

MALICIOUS

PDF

88.4 KB Created: 2021-07-14 05:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: c8922c3a63021cd4d1353e502e3a488f SHA-1: 0d741fe42db8039c1b17398ea94a4a4e1442d061 SHA-256: fa2c14a39cd62d5293db66290ce6729989896f3622d7d06b11781695c71bb098
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and a high ML score. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other disposable hosting. These links likely lead to phishing pages or further malware downloads, indicating a malicious intent to exploit users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/f11ea2228baf0d61f78eee0fcf4b6699/xapap.pdf In PDF document text
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/763c0a4d5b97e3a5b9b54272f305b4ee/95191292820.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afd38521847---36868449061.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b3976b37801---zuzozekiwuweludanebe.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/125145fd7deb920c9e298c917cdc6c85/80703843307.pdfIn PDF document text
    • http://pcmcpropertyblog.com/wp-content/plugins/super-forms/uploads/php/files/1014a1fa6a4de88cf7ce1ff57d96615d/xesagisamedoxupevov.pdfIn PDF document text
    • http://mvsexpo.ru/admin/ckfinder/userfiles/files/22035817582.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5bd52d220---jotomawutefemujukumiwuv.pdfIn PDF document text
    • http://adaviestransportltd.com/userfiles/file/pozusipiwi.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/66332fb09b761e4ce559d6d011f305d6/57132643043.pdfIn PDF document text
    • http://sharise.net/Uploadfiles/files/24591411884.pdfIn PDF document text
    • https://profipreklady.cz/www/ckfinder/userfiles/files/86176621325.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/64682916977.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/5401459185e20e53a785dafbd2fe2e33/74419280848.pdfIn PDF document text
    • http://mobydick-band.de/fckdata/file/79858049533.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606d6c107a295---89540951354.pdfIn PDF document text
    • http://coimbra.hu/uploads/ckfinder/userfiles/files/80915737769.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16070a2733bbeb---23386243159.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a1eaeb95596---94278704894.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/c4a5989d63f552a80debba6e025023d2/lonixidimivevalu.pdfIn PDF document text
    • https://aronabritcan.com/userfiles/file/ripaturogodetopowukid.pdfIn PDF document text
    • https://cargobull.cz/res/file/61735879329.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=techniques+and+principles+in+language+teaching+3rd+edition+pdfPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010e0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E0D 11280 bytes
SHA-256: a3c510b0ccc2308e28db12f4bb21da6328830dfc9fd574107f4dc7f1103ea330
font_02_sfnt_off000127fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127FA 16768 bytes
SHA-256: 6415ce375908196a5c203604b2f3e66dd3899d5008c60583ce4ea6c77fd2f63b

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