Malicious PDF — malware analysis report

Static analysis result for SHA-256 b236384e2b6260e0…

MALICIOUS

PDF

78.9 KB Created: 2021-09-09 19:26:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: e52a4572f2a46511670a99e1dc237dc0 SHA-1: 87d2ff7a971aeba10c436eaadfd7f2a424e9dfa5 SHA-256: b236384e2b6260e07d34169149930e576af52093108432b9eda3396b1059bdd8
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to compromised WordPress upload directories or disposable hosting, indicative of a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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://coretry.ru/uplcv?utm_term=kimi+no+na+wa+full+movie+eng+sub PDF link annotation
    • https://orrizon.ru/images/file/81144000360.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a1627c32d6---78666957431.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/16137e14dba451---zopezolikupesikasus.pdfIn PDF document text
    • https://museuminiaturesbesalu.com/files/98646367752.pdfIn PDF document text
    • https://protectname.xyz/whoisprivacy/userfiles/files/55982580375.pdfIn PDF document text
    • http://pozitron-s.ru/userfiles/file/41441969086.pdfIn PDF document text
    • http://wannawwannie.pl/userfiles/file/lorivexoli.pdfIn PDF document text
    • http://ottotech.center/userfiles/file/95046505107.pdfIn PDF document text
    • https://mvpartners.be/images/uploadedimages/file/rukugaleg.pdfIn PDF document text
    • http://adwokaci-pila.pl/userfiles/file/74191451689.pdfIn PDF document text
    • http://gmtshipping.com/attachment/file/gogodarirujafelukit.pdfIn PDF document text
    • https://najlepsze-w-polsce.pl/uploads/73528587071.pdfIn PDF document text
    • https://cgeminfos.ma/upload/file/63369081485.pdfIn PDF document text
    • http://pensionpoint.cz/userfiles/files/20723329544.pdfIn PDF document text
    • http://hanstime.com/userData/board/file/44985191272.pdfIn PDF document text
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/fdfa3f8f90d0534874c0c46b44e81ef4/tamukuxidadinefivakar.pdfIn PDF document text
    • http://citra.cl/userfiles/file/36172505090.pdfIn PDF document text
    • http://dzstock.com/Upfiles/file/16873002935.pdfIn PDF document text
    • http://notariocprietoa.com/notaria/documentos/files/napimepipumekemoxipiwa.pdfIn PDF document text
    • http://brilspa.ro/userfiles/file///13275897089.pdfIn PDF document text
    • http://dsraxys.com/uploads/72491803118.pdfIn PDF document text
    • http://ghinelliarchitettura.it/userfiles/files/bazelufevuwe.pdfIn PDF document text
    • https://www.vpn-solutions.com.pe/ckfinder/userfiles/files/revawedejajaberigos.pdfIn PDF document text
    • http://dsacare.com/admin/uploads/file/zuliziwatoxejoba.pdfIn PDF document text
    • http://ramenhajimetustin.com/uploads/files/34490139278.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16137c738c9198---xupixexemeweluxetuxeva.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

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_off0000cd5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD5D 18632 bytes
SHA-256: a4be9e9c2810ac553f2d877253eccc65b395f05c42ba6921bf67281283ccf96c
font_01_sfnt_off0000fd85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD85 10740 bytes
SHA-256: f87c741e70dd4167bcf40cc4550a9685a6e9d1b1a176a28de620229b72afcfaf
font_02_sfnt_off00011641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11641 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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