Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad93d6f4e2262899…

MALICIOUS

PDF

87.4 KB Created: 2021-07-30 13:30:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 772b65051965ed8428c0332210ea36aa SHA-1: 43de0bbf15c18933f3c96ec0d7da335fbc53c57f SHA-256: ad93d6f4e22628997801da5081a7115c5c1c47ccf04f7c5ed12f7cb58d5d0029
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple distinct hosts, many of which are hosted on compromised CMS platforms or disposable domains. The embedded URLs, while some are marked benign, are part of a larger pattern of redirection to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://tdfinalists.ca/clients/43449/File/73156032990.pdf In PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16098455d945a1---likivisu.pdfIn PDF document text
    • https://gaziemirkentkonseyi.com/upload/files/benefojap.pdfIn PDF document text
    • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/48938540164.pdfIn PDF document text
    • http://studiolegaletrotta.eu/userfiles/files/18698628438.pdfIn PDF document text
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/e11a7d4aeaf2c83423a180ecd3774cd0/lanekawonegumigal.pdfIn PDF document text
    • http://istanbulballoons.com/ckfinder/userfiles/files/50398939655.pdfIn PDF document text
    • https://advance-pack.com/editor_upload/file/bapipazikadedorasiz.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/ce3f5524c2f1975bc858e69b3ab026b1/zederol.pdfIn PDF document text
    • http://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160a003102fdf7---9576699793.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070422776b0f---zopakopezi.pdfIn PDF document text
    • https://girilawfirm.com/content_files/files/50028480630.pdfIn PDF document text
    • https://cgeminfos.ma/upload/file/37111770516.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/tsjt4sut03qd96ifcjro3dof2e/siniguvowidabedogivetan.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be1563a6d46---relipe.pdfIn PDF document text
    • http://www.cenlaenvironmental.com/siteuploads/editorimg/file/zasufadofaxuditamotu.pdfIn PDF document text
    • https://mollis.rs//files/79247932456.pdfIn PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e999eceb94---gotebipeputopo.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/db947bf5a0c373fb81664565b0292428/25249538094.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071fa7e345a6---11274830801.pdfIn PDF document text
    • http://gryfarmerskie.pl/pliki_wyswig/files/67589316748.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/1da53e13bf5aed7ff9ba6f6a1914e4a5/16684572370.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=which+yoga+asana+is+good+for+heartPDF 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_off0000f0e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000108fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108FA 17604 bytes
SHA-256: 96963460c3b22bd8559829055fed518d488fe309b1c960f293a62bafe4909992
font_02_sfnt_off00013741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13741 10816 bytes
SHA-256: db95facb96e1255a938e02dbe15b63af800c7c1b8794e1f841a98358b40e3c87

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