Malicious PDF — malware analysis report

Static analysis result for SHA-256 b69709d51bf89f54…

MALICIOUS

PDF

81.8 KB Created: 2021-06-25 12:37:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2bb6ee7e026add30d906338ec504ae0f SHA-1: d61a9724cc2e8d13e9651c7e51dc2dedfddf1727 SHA-256: b69709d51bf89f54255348d22b465c9956084490900e477effb58ae042464498
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories, indicating a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and embedded URIs are indicative of malicious redirection tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8d45aec1c---16408662323.pdf
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f3e1f64bfd---89373770944.pdf
    • https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/707b98af760e9851ce0e61237f59aa2f/bapaxitilinuxomosesira.pdf
    • https://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/16092f90132cc9---10549501326.pdf
    • http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/5d088e239435348b270edcf81b006020/70134699509.pdf
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/2011b4f52d4cd4f22e6a4eb000204c07/73170363547.pdf
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606d16a586b2e---55255069070.pdf
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4aa310421c---potixumajizatadipodeg.pdf
    • http://apvn.info/userfiles/file/putulaneju.pdf
    • http://cityfate.com/files/files/22572829467.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c38c6ae0b5---16071931127.pdf
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/03095abc6eef7fbd3842cf727aa5e5ee/gofanugivotijuje.pdf
    • http://bayanairag.com/uploads/userfiles/files/tesidukikigefuseko.pdf
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/2q474mtqi7lvbf5gmc5eift1fk/27494205489.pdf
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/c9b8c9fda634e3fd9d0ec60818083f1f/vetuxamosubiselonizafo.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=jon+schmidt+pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de32.bin
42d100b31d4b301c92d0cb7598352104dae51a98837c7b9d1248f917f29d0eb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE32 10436 bytes
font_01_sfnt_off0000f5a4.bin
3bd43822b13e87346831dab1a9cb1a3608ea1eb835860ed4b5b31d35ec2b6684		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A4 17876 bytes
font_02_sfnt_off000122e8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122E8 16792 bytes

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