Malicious PDF — malware analysis report

Static analysis result for SHA-256 196e97e3a55be000…

MALICIOUS

PDF

92.5 KB Created: 2021-09-04 10:52:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 2a0eab4a7e3a3b21fe9166d64642f247 SHA-1: 5a881f5076aabe146c8d2421f410f19d735d2e31 SHA-256: 196e97e3a55be0009c846eb2fbde4b455fcafb7b6b0b7f480ddb32fc10fcb152
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites and disposable domains, indicating a link farm designed to redirect users to malicious content. ClamAV and ML classifiers strongly indicate maliciousness, consistent with a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16088b30c920c7---47252356285.pdf In PDF document text
    • https://keepingscore.org/userfiles/file/45183390683.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2a6b2c0579---nukozajinusejudavubuxan.pdfIn PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/m4e1rrvuf7bs5unm7dduhgv673/jititawujanimuvejeriji.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/8mmlop6oj69rgui41rvnu5mhod/soxiri.pdfIn PDF document text
    • http://www.blueoak.fr/image/file/30704753313.pdfIn PDF document text
    • http://kovacsoltvaskerites.hu/images/file/lekifisenadate.pdfIn PDF document text
    • http://kingcraftviet.com/uploads/ckfinder/files/jaxewola.pdfIn PDF document text
    • http://szilasfood.hu/pic_upload/files/juxoretozu.pdfIn PDF document text
    • http://rajhansnursery.com/userfiles/file/32413938935.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/b8211661f78fbb04224d6686d0beb026/lakazipijomoxesalajimu.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087a18e3723f---61904135164.pdfIn PDF document text
    • http://roycraft.ca/userfiles/file/lizabiver.pdfIn PDF document text
    • http://www.amanuttarakhand.org/ckfinder/userfiles/files/labowosevupobinofagiko.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073c4702fa3d---31671298166.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606f62733a337---wugumepas.pdfIn PDF document text
    • http://brcassociati.com/userfiles/files/jonijusun.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/8a7b25a1ac6640f7e6137e9212693d7b/11944854614.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e60dfed7b7b---50780551031.pdfIn PDF document text
    • http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc39e9df06---ferasosifapodakukomaba.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a9f16e21c29---tijelolipefi.pdfIn PDF document text
    • http://portaldeaquidauana.com.br/ckfinder/userfiles/files/84301466241.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160ff66ba13a3e---2215747100.pdfIn PDF document text
    • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/8689edcca340403ac4f6c18dd07bf986/xizuxujiso.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=ifrs+2+pdf+full+textPDF 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_off0001066f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1066F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E86 10288 bytes
SHA-256: 68877fe18f588ebc77798fc415e5be5b7501238e1826dc284bbda25c66afe39b
font_02_sfnt_off000135e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135E7 18020 bytes
SHA-256: 11ebf44491784dcd5660da5ae0b7610c9eb0b0e5d5424995440e5aaf9b6886ae

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