Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dcee301993e70ac…

MALICIOUS

PDF

81.8 KB Created: 2021-09-06 06:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 52317a143e6847907c58d548ee959211 SHA-1: 1f6d6c68d7be04b32bd6272382c70a8dc96a95be SHA-256: 0dcee301993e70ac35f4089446403677629b8ec9a1b0a639c5412259e7121b37
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many of which are hosted on compromised WordPress sites, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the nature of the links and the PDF structure point towards an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/mupp1fu109jm54ui3u2btu81c4/36212359562.pdf In PDF document text
    • http://cp-1.ru/userfiles/files/bubokoxetup.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b8046ff3b94---94582233858.pdfIn PDF document text
    • http://soepcentrale-dekeyser.be/userfiles/file/javibugod.pdfIn PDF document text
    • http://doubler-son-capital.com/photos/files/vumitezufitokila.pdfIn PDF document text
    • https://luathoanghuy.com/uploads/files/20545026775.pdfIn PDF document text
    • http://theeultimatenetworker.com/ckfinder/userfiles/files/65437622725.pdfIn PDF document text
    • http://ktcyy.com/ckfinder/userfiles/files/72543938691.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607b0ceb4a899---25843336738.pdfIn PDF document text
    • https://acgroupenterprise.com/userfiles/file/xukisibarejezoraxoxon.pdfIn PDF document text
    • http://quickvideo.nl/userfiles/file/puzefowur.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/bagijizimal.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bcbf4d568e2---97053210118.pdfIn PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/160a872da7d8c4---nojazufilagodogivagitutuz.pdfIn PDF document text
    • https://eklyps.net/images/file/3734913025.pdfIn PDF document text
    • https://balustrady-metalik.pl/files/sodinaziro.pdfIn PDF document text
    • https://absoluteanytime.com/media_file/files/files/sumusonesepejamokuvilare.pdfIn PDF document text
    • http://tkhomedeco.com/assets/uploads/ckedit/files/20210809031323.pdfIn PDF document text
    • http://gostinica-domodedovo.ru/files/midenulurakuzegis.pdfIn PDF document text
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/75b37ac0e51435a3346b06c50e32c858/muderofutoret.pdfIn PDF document text
    • http://kartinatv.org/uploads/files/zovosidimixi.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/acb9c667fc3aa4d8427e03083028d297/94360962131.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac58f9ae5e4---walusotirar.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=post+office+recruitment+2019+kerala+notification+pdfPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD712 18228 bytes
SHA-256: e6da0f05ad404839e1926ee506b74acb29293be0463ba7d3c5d377e426f5a321
font_01_sfnt_off000105e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105E1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DF8 11436 bytes
SHA-256: 29aab05966031124ad18b13db5a9ec5bfedccaf4da471d999e7ec8a217699347

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