Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e64c2f9aa367b13…

MALICIOUS

PDF

114.6 KB Created: 2021-08-20 19:48:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 50592f02801fd74ce0326fb35404befd SHA-1: 94791fdf68e9656767483e3b3cef92439e4b0800 SHA-256: 9e64c2f9aa367b13fafad0963f01eb1db5e1fff43331053e4a2347aa30491db4
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, indicating a link farm designed to lead users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The document body is heavily obfuscated and unreadable, providing no direct user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://agmatbaa.com/upload/files/4883042459.pdf In PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/d5613624e39038a75f41f43584efd496/61545434545.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e239ccb1f44---jujowo.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/19ce723b0a9bfc5699a66679ca08194c/galinapatogagafididosiro.pdfIn PDF document text
    • http://brilliantsolarpaneling.com/userfiles/file/87865871074.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/438cb0bi64i8ucjpjutip1l7oc/11750925232.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9608ad4c1---51589197384.pdfIn PDF document text
    • https://fajndoktor.cz/images/file/files/1260310008.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085a4c477ef2---81521841598.pdfIn PDF document text
    • http://keluargamimpi2.com/contents//files/25800705094.pdfIn PDF document text
    • http://raiders71.com/clients/4/41/4134020f2f298c111575624a380fabfc/File/tatefoxu.pdfIn PDF document text
    • https://ajur.rest/uploads/userfiles/file/75681941412.pdfIn PDF document text
    • http://a1-automotivegroup.com/upload/files/wukonezixujurit.pdfIn PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c77b256134f---14537487187.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c40ec9e14d4---45837680435.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/gj3h0obb5chfkkfu4vjtopu9c6/dejipulefaduzesodexurowut.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c76c8222014---zugebufizetofalosavasusem.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d362a24c123---62373109872.pdfIn PDF document text
    • http://kamkmori.cz/ckfinder/userfiles/files/15589486299.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a6e644df8e7---203515271.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=vivaldi+summer+presto+violin+sheet+musicPDF 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_off00015654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15654 10912 bytes
SHA-256: bd9309248e22a09239c14c53875da90eae3e994e94e699c1783d4937a0d92ae1
font_01_sfnt_off00016f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F64 21904 bytes
SHA-256: b0c2d24c2372d3bc93373d6d9a354575295f43b40315ffde2ef83bc6973d2746
font_02_sfnt_off0001a492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A492 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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