Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f2a481a5a7ce290…

MALICIOUS

PDF

105.6 KB Created: 2021-07-05 19:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: d026dd0cc72ba6f55770cc170e822d88 SHA-1: 4e3ece5dc4785632706472aa9346b9a2c12a708d SHA-256: 9f2a481a5a7ce2906ac24fb913ae54f25d5a29dea84e5c017ca343a0b050b2a6
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or are part of a link farm on disposable hosting. The embedded JavaScript likely facilitates the redirection to these malicious sites, which are designed to deceive users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9926

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
  • 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 https://ajitcoatings.com/uploads/88953978076.pdf In PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/9b80eae016871d4f693b6e635f2f6339/gosuwudilimedabisebajop.pdfIn PDF document text
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/763sme28h9bd1h5l6kd9gssak4/68008805581.pdfIn PDF document text
    • http://pechati-piter.ru/userfiles/file/pibazutawojewuto.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a6d8458cde0---gamajilor.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa161847ba8---zenesarago.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/9b9b03e32c27a2488984bce80cecf61f/50792277849.pdfIn PDF document text
    • http://newdimension.su/userfiles/file/93466495519.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608850e2661d1---35991435400.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/16086f3ff9eb56---zowigefexixo.pdfIn PDF document text
    • https://atamergranit.com/userfiles/file/gijiko.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/233bf2b86cd394b4fdd986c1a0c9fb6a/8109289027.pdfIn PDF document text
    • https://aymsoft.us/aym_image/files/47862327809.pdfIn PDF document text
    • https://pirkitpadangas.lt/ckfinder/userfiles/files/pazagefegefanupixidoruro.pdfIn PDF document text
    • http://pitin-akutsu.com/js/upload/files/65219365662.pdfIn PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/c913d9f50bf4502cf3a3f3831c17da71/sifinuwo.pdfIn PDF document text
    • https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/6885ca828e9bf08f3264036ec507e9bb/jirujonofezijudixi.pdfIn PDF document text
    • https://brandonsmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/i4ntdroatht1er5faustgfaad5/95029045663.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/0g9io73le1skodc9ah5kvj1ve0/23176424710.pdfIn PDF document text
    • https://partnyor.az/userfiles/file/54004835354.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608262d80c979---xopuwofikitukogo.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/nghh1e886jvv55c8lc1h5k8me3/26184084968.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/5d7ff69977548bb1a39b080feaac24bc/11411881502.pdfIn PDF document text
    • http://theshippyfamily.com/clients/57051/File/30445305797.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=solutions+manual+for+fundamentals+of+thermal+fluid+sciences+5th+editionPDF 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_off00013398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13398 11048 bytes
SHA-256: 375a135b8aac9e5cec10914f4c2c7918587367c260a42558119282207bdcc2af
font_01_sfnt_off00014d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D1B 18484 bytes
SHA-256: 5382773541b49be687e65ca7e9d8daabf00f510d3357011bd7a6e31c3831c7fc
font_02_sfnt_off00017ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17DDB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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