Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd5ebb9b914ed6bd…

MALICIOUS

PDF

93.5 KB Created: 2021-10-04 11:46:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: edf7dca150def6bba5ec33c116d60bc4 SHA-1: 19c35b1275a6f01ced4d1fe3f55eef1ec47370c5 SHA-256: bd5ebb9b914ed6bd8f4d00bb17523d2e5c7c9e1868ed65e8df9c38864081a5b5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to domains flagged as disposable hosting or compromised CMS uploads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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 http://influences-vegetales.eu/assets/Image/files/fobepusorifusidebe.pdf In PDF document text
    • http://myphamasia.net/upload/files/disavezer.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cfb9f9cfda---27141722346.pdfIn PDF document text
    • https://tlkingatlan.hu/kepek/other/file/13740012842.pdfIn PDF document text
    • https://ljlconst.com/admin/images/file/vafivamidobinaniligexev.pdfIn PDF document text
    • https://bi-kiesabbau.de/cmsimple/images/file/7784226879.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/161480aa2be2a0---90737014752.pdfIn PDF document text
    • http://szm.hu/userfiles/file/82879502543.pdfIn PDF document text
    • https://ladymamashop.com/uploads/files/202109071632139254.pdfIn PDF document text
    • http://twtqedu.com/userData/ebizro_board/file/venogutodu.pdfIn PDF document text
    • http://vssteel1999.com/ckeditor/userfiles/files/16813495671.pdfIn PDF document text
    • http://pronobile.com/catalog/file/nodobisugudirexon.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614ae1f0f1a19---pedonuna.pdfIn PDF document text
    • http://cisseo.net/userfiles/files/lanomobexor.pdfIn PDF document text
    • http://veterina-hrib.cz/user-uploads/files/33746245738.pdfIn PDF document text
    • http://ipceurope.eu/assets/file/nulumetedevipap.pdfIn PDF document text
    • http://topp.pl/_topp/file/41287209192.pdfIn PDF document text
    • https://j26clean.com/upload/files/72894871025.pdfIn PDF document text
    • http://ropesadventure.com/d/files/44913096711.pdfIn PDF document text
    • https://dreamscapes.ca/dream_scapes/userfiles/files/15645334275.pdfIn PDF document text
    • http://smenergy.kr/uploaded/file/11412645161305f763d009.pdfIn PDF document text
    • http://vinhthuanvietnam.com/upload/files/mikidefotovizajefi.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/fjic0tha978sc8k7la93nb5ch2/nexuvovo.pdfIn PDF document text
    • https://fertilizerproductionprocess.com/d/files/15197021668.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614dcc82b2fa2---wamaweg.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=2+types+of+culturePDF 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_off000103d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D8 19924 bytes
SHA-256: bdcdb722fa3ad5bc154a65fcf8fc2958c79c3412ce3fc322f51115d1c75c9f16
font_01_sfnt_off00013909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13909 10352 bytes
SHA-256: 13a72bc329b01cb72cbfda77d5002f68605b893d8fd45e836dfb500b89560006
font_02_sfnt_off000150b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150B5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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