Malicious PDF — malware analysis report

Static analysis result for SHA-256 0911896064009403…

MALICIOUS

PDF

81.1 KB Created: 2021-09-01 11:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: d26f6062ff9fa46095087b15cf469955 SHA-1: 32945269e6c69f7e2f108cd9af8e9e9eb1b2be79 SHA-256: 0911896064009403e4667f51c597637275df4b7f8d7bc36085ba208ca7ad3dbf
96 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment that it is used for phishing or malware distribution. No scripts were extracted, and the document body was unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 5

  • 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://coretry.ru/uplcv?utm_term=sole+f80+folded+dimensions PDF link annotation
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f0543450f73---67902851867.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/8rh5k0mckmg4jr62ivberpv94b/kepolijisuv.pdfIn PDF document text
    • https://rocksoliddesigns.biz/userfiles/file/40706877975.pdfIn PDF document text
    • http://e-hematologica.com/users//file/59923675533.pdfIn PDF document text
    • https://jxlmedu.com/file/files/20210722_065625.pdfIn PDF document text
    • http://kondicionery-krasnogorsk.ru/upload_picture/file/rawotiwokixuri.pdfIn PDF document text
    • https://seerupit.dk/assens/file/jazuluta.pdfIn PDF document text
    • http://sghscsjamarai.org/guruhargobind/userfiles/file/sajogigijedeturalugilixit.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b5f0500cc4---vagegejo.pdfIn PDF document text
    • http://wccflooring.com/userfiles/files/35686619373.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085213b22a7b---70494428486.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/5480012359.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0b7d8bd77f---1406459478.pdfIn PDF document text
    • http://alwaditrading.com/userfiles/files/voposomeb.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/teraritagewebuxa.pdfIn PDF document text
    • http://nickels.design/ckfinder/userfiles/files/44490523522.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/1bf3e93ccde7cf94a96c70d886312835/xejaxemofaniko.pdfIn PDF document text
    • http://paneldeconsos.com/userfiles/file/wimix.pdfIn PDF document text
    • http://hillcresthigh1971.com/clients/9/9f/9fbf9047a6869172a982db6f42f05a9a/File/govupedadeviterogubi.pdfIn PDF document text
    • http://scamps.biz/userfiles/file/70458150771.pdfIn PDF document text
    • https://bodymason.com/user_uploads/files/rifaxabusoxaze.pdfIn PDF document text
    • http://ristoranteyuri2.com/userfiles/file/zonovajunaminuretukixapas.pdfIn PDF document text
    • http://abacusnancy.com/userfiles/file/sufurodezadagojelukilukaw.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609a56063185e---datawefopo.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_off0000d7a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000efbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBE 10560 bytes
SHA-256: 9fe3815358d1268706bb3c5f7faadace28fe5a2271618eb3145d86c94934ea1b
font_02_sfnt_off000107b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107B2 18188 bytes
SHA-256: 95931f6d0081381e70cb75fb09bea948f1978721669933da52d809c6b220be2d

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