Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a2b519e25334a96…

MALICIOUS

PDF

110.0 KB Created: 2021-07-04 07:51:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 2091e220c1b56b0d8f4bf2f87ab499f5 SHA-1: 52d2779334c5e8ee18f4282d5a1e9ea6d9e89c30 SHA-256: 8a2b519e25334a96cc0660b156753db3d66fa3cf6f7f7fa724f71b71ee934f8d
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and ClamAV as malicious, indicating a phishing or malware distribution attempt. It functions as a link farm, containing numerous URLs pointing to compromised WordPress uploads and other disposable hosting sites. The primary goal appears to be directing users to malicious content hosted on these external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://crysiq.ru/uplcv?utm_term=laptop+requirements+for+league+of+legends PDF link annotation
    • http://otohondamientay.com/upload/files/90803882323.pdfIn PDF document text
    • http://childhood-matters.com/clients/49507/File/pemagumumubavaxapelufobat.pdfIn PDF document text
    • http://jevades.com/aircraft/fckimages/file/zipaferivibezodatodevoras.pdfIn PDF document text
    • http://soflocops.com/clients/67403/File/72422512873.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/dc3be70c4d41d0944a709f08d03ae6d7/jorigapomame.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/76d606c3f0db90f4f0bc7a68ff468832/44946697751.pdfIn PDF document text
    • http://terralindahigh1981.com/clients/866868/File/bivexabetowiza.pdfIn PDF document text
    • http://solarhomepage.ch/fckeditor/editor/images/file/57696675503.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608adaa268972---79819565838.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b5f05750ffd---jikikup.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b0771dc4558---ruvek.pdfIn PDF document text
    • https://dollarplus98.com/images/upload/files/74932276274.pdfIn PDF document text
    • http://www.radanhorse.com/resource/files/rutepupawemulomerukedor.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c546ce88924---pedudowip.pdfIn PDF document text
    • http://gamax-motor.cz/data/dokumenty/renino.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16077e58bdf093---gidivujugamiwifaxuju.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160baf4376278b---59353825454.pdfIn PDF document text
    • http://cukierniabrzezinski.pl/www/artizam/fck/file/16088153225.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160708f7a34517---71640415010.pdfIn PDF document text
    • http://detikakdeti.ru/img/file/togub.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/3709110114.pdfIn PDF document text
    • http://omgmediatank.com/userfiles/files/85843791890.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_off00014c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C93 17264 bytes
SHA-256: b32db3e3f38b91c97c50b530bf0a5fba4685d9a19dc17c04ff63bc266e5fc6ff
font_01_sfnt_off0001796b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1796B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00019182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19182 11044 bytes
SHA-256: 643781f94c26c3338c9d0756e5cc3b5fa3aa65ad88a68e69f4ccd797d6f9abc4

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