Malicious PDF — malware analysis report

Static analysis result for SHA-256 206ae6415b75aa7e…

MALICIOUS

PDF

87.5 KB Created: 2021-07-04 04:53:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: a34cae71228781b6efaa4acbec127b93 SHA-1: f66b5cd62f46610066759d46cfd114881355f43a SHA-256: 206ae6415b75aa7e7f247bf88600e224bfc29eb8122dac5b9f73954e3175ad70
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a link farm pointing to multiple compromised WordPress sites, specifically leveraging the 'formcraft' plugin for file uploads. The ML classifier strongly indicated maliciousness, and the structure suggests an attempt to distribute traffic to potentially malicious or spam-related content. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608efec944e1e---keselisipokafa.pdf In PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160788432b13e0---fosasegivo.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/34cd42ced6cabcee981f53e1dd8ee47e/52865455895.pdfIn PDF document text
    • http://verkaufs-akademie.com/userfiles/file/79967908989.pdfIn PDF document text
    • https://china-glass-mosaic.com/userfiles/files/20210702_163731.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082611709c02---84324289149.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c1fb471aea7---50697496468.pdfIn PDF document text
    • http://xpressup.com/userfiles/file/fexipovojevesonibabivi.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/00adc0ab599ddf43004324edbf63911e/finuk.pdfIn PDF document text
    • https://discovercefalu.com/_data/images/file/jakibonejil.pdfIn PDF document text
    • https://www.tanyadantus.com/wp-content/plugins/super-forms/uploads/php/files/27a7a79dafb4b442619b71aef4cc1ef2/duximajogojezob.pdfIn PDF document text
    • http://leaguengn.com/userfiles/file///80648673012.pdfIn PDF document text
    • http://ibshop.gr/uploads/_uploads/files/33919573341.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/2a81af4eaf776dd28ea80181ac6828bf/banijaxagekukuradof.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a233c6a8f2---2906061393.pdfIn PDF document text
    • https://aldurra.ly/images-editeur/img/file/69578407375.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160804647c1939---74807664402.pdfIn PDF document text
    • http://mkngsp.ru/upload/files/delumiro.pdfIn PDF document text
    • https://roweryelectra.pl/app/webroot/uploads/file/16212379653837.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609826d184136---xozovowajegelejupa.pdfIn PDF document text
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/k9omel4fsuas37rtid1v6059h2/52129135115.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608686a95bad4---rojukurizorugowape.pdfIn PDF document text
    • http://malagi.pl/user-files/fck/file/genafizarogavoferix.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160ba533d894c3---dirovur.pdfIn PDF document text
    • http://loca-granderoue-montaletang.com/ckfinder/userfiles/files/xexisowuvesakul.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=how+long+is+chicken+good+for+after+cookedPDF 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_off0000f20e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF20E 10924 bytes
SHA-256: 871527c0b4ef00143496e9d93283ba94615a73514b6f93fc07dc68d4313419ec
font_01_sfnt_off00010b1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B1F 16680 bytes
SHA-256: 60b2ea323093bc7934c47cf5c77d945d5614e664f6cc8a3789335d8930a7577b
font_02_sfnt_off00013688.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13688 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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