Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e71060d430b5e2…

MALICIOUS

PDF

79.5 KB Created: 2021-06-30 10:11:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 8030a547013e7c5d375a6ac5ec200dd5 SHA-1: c3feb06d264058bcd031c8105418adc3bac06d25 SHA-256: 02e71060d430b5e23313b168152a765a677d70409e86cd4e0ca6bd51c52588e1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by an ML classifier and contains numerous links pointing to compromised WordPress sites. These links appear to form a link farm, suggesting a phishing or malware distribution attempt. The document's structure and the presence of multiple external URIs indicate a deliberate effort to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://garglob.ru/uplcv?utm_term=end+to+end+iot+solutions PDF link annotation
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc32fc1e8c0---49087091621.pdfIn PDF document text
    • http://sun-green.be/ckfinder/userfiles/files/vopotov.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/8ecphobta03mishfqhgvrho31d/32528668156.pdfIn PDF document text
    • http://sevenseahotel.com/uploads/images/files/82896587054.pdfIn PDF document text
    • http://yule-sign.com/upload/editor/file/20210616023113.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/0cf580132f31588d6f38912b122146d4/6869268152.pdfIn PDF document text
    • http://xn--80aafkqcanfpgnhbng3b5i9a.xn--p1ai/pict/file/jepogit.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/160b48338d41ae---11822976593.pdfIn PDF document text
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160926dae8ac10---mifupijetuxebitakoxalas.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2c5884304---16056336443.pdfIn PDF document text
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/160801ac89248b---rujixalopak.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/1609954eab3b52---37413965508.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/362c440c0d1f7b95ef9f749119ba4d08/megibulenajo.pdfIn PDF document text
    • http://langfordfinancialservices.com/userfiles/files/34180813657.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160b09cfc43cb1---56325075356.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160b9ce9e28242---55853831082.pdfIn PDF document text
    • https://divinenine.net/userfiles/file/55142460851.pdfIn PDF document text
    • https://catbasailing.com/upload/fck/file/91967104196.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160707b3f71370---tigaserefaverebiduzozogi.pdfIn PDF document text
    • http://atek-ent.com/upload/file/80708287978.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce5a11c5822---tigivasesijorer.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16085ae20b929a---7351062058.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/c809ac84d19efe20b6724932de7c8ea5/vekitesufulakerego.pdfIn PDF document text
    • http://odmooregolf.com/clients/e/e7/e7046aca88cfcc92de0be8f3f6b3de3d/File/fubobanuvonoweme.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_off0000d51d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD51D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ed2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2F 16704 bytes
SHA-256: 18906b8cffc52b0c9b7476cb5968ac622950dfe5360c0b7da348145146cd1674
font_02_sfnt_off000118a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118A9 10064 bytes
SHA-256: 426e0b0cfb26e23cc1d97cf722399b2acc287719375a9e2ea82b230be50be82c