Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e0ae49829fdf571…

MALICIOUS

PDF

76.6 KB Created: 2021-08-18 17:42:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: a1b409a1918de16e600675e5d9da0415 SHA-1: 6f39a675f64b93020288b39c710bae0ce07644f1 SHA-256: 6e0ae49829fdf571588ab2f5a61f034e2597c6997ade7a50ea7a08066dd073d0
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to compromised CMS uploads, suggesting a link farm designed to redirect users to potentially malicious sites. The ML classifier strongly indicated maliciousness. While no scripts were directly extracted, the presence of embedded URLs and the 'link farm' heuristics point towards an attempt to lure users to external resources, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://irlanc.ru/uplcv?utm_term=garry%27s+mod+map+five+nights+at+freddy%27s+2+download PDF link annotation
    • http://alkanboya.com/files/file///81923520452.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/3e86e1f18116786513f12e9d552c7105/33992037283.pdfIn PDF document text
    • http://asbufestival.com/uploads/FCK_files/file/57134563568.pdfIn PDF document text
    • http://www.alfapilates.pl/upload/file/33590533163.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/dupisijuvijukifaluruxaga.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160acf29622026---meritevekuvakezuxoda.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16073003653351---pediwi.pdfIn PDF document text
    • http://kiuanai.com/userfiles/file/movilil.pdfIn PDF document text
    • https://korovin.org/site/img_ufiles/59613385846.pdfIn PDF document text
    • https://chuyennhakienvangvn.net/upload/files/36657306369.pdfIn PDF document text
    • https://www.e-oswiata.olesnica.pl/ckfinder/userfiles/files/pedetila.pdfIn PDF document text
    • https://jokerprod.net/userfiles/file/losekifuloka.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082e068f2b72---74142902336.pdfIn PDF document text
    • http://shqinze.net/admin/upimg/file///tafovetipu.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16087ed4122ff7---1129028295.pdfIn PDF document text
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/5f3b164248cbc588576bbf930417b550/92887993579.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc8a9f16e0---gegotojule.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/94ef45a8b1d95a364be4927163404d60/veguwuzera.pdfIn PDF document text
    • https://www.varishastalari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c89f15bd5f---goxudi.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2b7637ab9f---mejomivofekilixibisez.pdfIn PDF document text
    • http://wdnederland.nl/file/65240685481.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/vamm6gk1iaoctsb2olpp0ejtc1/25961967877.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_off0000c50b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC50B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dd22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD22 11404 bytes
SHA-256: 7e4b0e22bc42d1f17f335ce5b0b8fae5da63480fcfe2f27fd282d8280efe3813
font_02_sfnt_off0000f7d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D8 16984 bytes
SHA-256: e57b70bea5b3bdd3bfdd8ab8ce4704f7b652bca12d93c7b7a4355039beae657c

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