Malicious PDF — malware analysis report

Static analysis result for SHA-256 8890bfa7ee48c29a…

MALICIOUS

PDF

83.3 KB Created: 2021-08-30 15:51:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e8f28940543ca164ccc4b04d59a9ae00 SHA-1: ca8a9866d023adc86bcfa2066cb7d833007b6d89 SHA-256: 8890bfa7ee48c29a66fb2542f19a21a56be567017d7e9f11a13e957e5f4797d5
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised CMS upload storage and disposable hosting, indicating it functions as a link farm. The primary goal appears to be directing users to potentially malicious external sites, consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://nnkcreations.com/userfiles/file/sivonogeguzutoler.pdf In PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0a4a45b72---48032774607.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/38ab632e66147bf4520e24003137835f/futatorasebu.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e3560fee40e---38047278075.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/gubibuvidefuduzimi.pdfIn PDF document text
    • http://cheers-gifts.com/userfiles/61685945693.pdfIn PDF document text
    • https://www.propertyadvisersaustralia.com/wp-content/plugins/super-forms/uploads/php/files/01b8c15cbe15e08df3a60795c8fec033/71007408107.pdfIn PDF document text
    • https://digiconelectronics.com/media/23326260585.pdfIn PDF document text
    • http://magendans.com/imagefiles/file/21505384717.pdfIn PDF document text
    • http://ackerviewguesthouse.com/userfiles/file/libedizas.pdfIn PDF document text
    • http://metabolit-plus.ru/files/file/jimodetawesekesenuropedoz.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0e23ac3d68---dirisibilas.pdfIn PDF document text
    • https://digireg.pl/upload/54261126823.pdfIn PDF document text
    • http://fincasotilloviejo.es/files/sotillo/_repo/file/6548264013.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/a437c2a09eb96349137b7e93cbd8a887/zadoloxulesotuwugibadop.pdfIn PDF document text
    • http://robedecreateur.com/img/files/75111458104.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee85f1d0be6---napinevoge.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16087ffb9e4408---96093208664.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2c85e1fdc---sakifokaj.pdfIn PDF document text
    • http://guowangcable.com/d/files/55710511569.pdfIn PDF document text
    • https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/4ed4470c43784c8531af984dec184895/62312627893.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16114ccc584ce9---norigejopufuwesola.pdfIn PDF document text
    • http://architettodrabeni.it/userfiles/files/xukuzejipup.pdfIn PDF document text
    • http://creative-format.com/upload/editor/files/59977102421.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/7df0fa8dcf09402e1a32d9191a6e7bef/zekeguxalamuzowajine.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/8c01a9fbbc406b257c584ba729184d5b/6467810099.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=bigby+and+snow+whitePDF 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_off0000e1c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f9da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DA 10776 bytes
SHA-256: 13eb4e99316c9ec06efe2713c3f91b2f6b88083250c154ba0be8bbdd9cbe3490
font_02_sfnt_off00011286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11286 17496 bytes
SHA-256: 610789cb16fc1db877727feaf3720049606031e94226eaf3e97cd9ae39085373

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