Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e09db332c86ad17…

MALICIOUS

PDF

76.7 KB Created: 2021-06-26 03:16:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: b685eb1f3cd2d909c489cd68b3619004 SHA-1: b64d7bfe2a10fed85ca41633dd8a99a4f74f847a SHA-256: 5e09db332c86ad17c6f3195a5f9a76a5495c69ff9cc2b2a4039e1a0b9b4ed831
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links pointing to compromised websites, many of which host further PDFs. This suggests a link farm designed to redirect users to malicious content, likely for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/d2el6dj1634nco7j82r5pt4c7q/20741602481.pdf In PDF document text
    • https://pointvirgule.ca/upload/editor/file/vepodozupulato.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3f67db2488---60535418712.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/h20c9v7ogs0ahk8q77fsl6tc75/19460814387.pdfIn PDF document text
    • https://lacaune.hu/userfiles/file/93868883334.pdfIn PDF document text
    • https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/a07ccc6a1b8a340b9258bb15efdee793/renidixekizaj.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/5c5dae50acf2483b19d6a9b3e3abb6de/tutibono.pdfIn PDF document text
    • https://33mobility.net/uploads/files/pifalogepojureselaliruko.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/9759glgvtq14g4m1gp47jnlgnp/31395946788.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c5739aef3a2---37735978023.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160c4da961f8e5---10735890261.pdfIn PDF document text
    • http://coopmong.com/ckupload/files/33775687376.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a446943219a---liduwo.pdfIn PDF document text
    • http://divorce-difficile.fr/userfiles/file/47749740222.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608a16496b698---mexinex.pdfIn PDF document text
    • http://firewheels.pe/userfiles/file/mofoloxuruzovamitisepim.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/dtkknhq69280a894qfpli4rq8p/85224692425.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/16099bada224d9---37308866981.pdfIn PDF document text
    • http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160ac6ee320c2e---tatevezunod.pdfIn PDF document text
    • http://vasvaripalmuzeum.hu/upload/file/3572567910.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/kalepone.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/4a78a12bea156ee0e6de5b406d9a14c4/22315548869.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=watch+quiet+place+2+full+moviePDF 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_off0000c23f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC23F 19304 bytes
SHA-256: 5bad492744f4d84009d8870d2ddc443d58c638d6a67e58ad355828604f8df917
font_01_sfnt_off0000f2d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010aea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AEA 10800 bytes
SHA-256: 96c61c6ebd7ec3d9f96aefbb6fbc82b2f392e168a573b852ceee0c2a6fc033ee

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