Malicious PDF — malware analysis report

Static analysis result for SHA-256 08bbbf0354dadc4f…

MALICIOUS

PDF

83.6 KB Created: 2021-08-14 12:33:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 022a225de8af5c4d5d3795d472665c53 SHA-1: 62af7a138380127e4008d1db2d4ec0e307a4d5ea SHA-256: 08bbbf0354dadc4ffd0b2343f8b0a6311d8be0312bca48dbde79261754ea9121
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains a link farm with numerous URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting an attempt to distribute malicious content or phish users. No scripts were extracted, but the presence of embedded URLs and the overall structure strongly indicate a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/0a18d9b284f7908e55c43b876e818566/56285037402.pdf In PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160f2b77f792fc---47556911500.pdfIn PDF document text
    • https://proartgaleria.hu/files/files/buvagizivadikibofos.pdfIn PDF document text
    • http://allprintusa.com/admin/images/file/60753273697.pdfIn PDF document text
    • http://imreelectric.sk/uploads/file/91619374375.pdfIn PDF document text
    • https://masihpt1.com/contents//files/kiriveje.pdfIn PDF document text
    • http://beccaro.it/userfiles/files/sonutizonuribadubib.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16098df97d5b34---gadidojolon.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca8040fe34---79302959896.pdfIn PDF document text
    • http://imssp.by/data/images/fxeditor/file/16209614570.pdfIn PDF document text
    • http://szao-spb.ru/images/news/file/38066682291.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a216e98e92b---woxopolexunonekadefutam.pdfIn PDF document text
    • http://www.amedna.com/userfiles/files/87604139729.pdfIn PDF document text
    • https://fanaf.com/article_ressources/file/858069755.pdfIn PDF document text
    • http://altaprecision.com/userfiles/file/bofalen.pdfIn PDF document text
    • https://stillwaiting.org/userfiles/file/41403995049.pdfIn PDF document text
    • http://www.vikingmaterials.com/img/59634786258.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/jhpjovitlq0f42on35ppsditha/57299135785.pdfIn PDF document text
    • https://sammycar.ch/sammy/sites/default/sammyfiles/newsletterfile/pogarakusawelaf.pdfIn PDF document text
    • http://jarosi.hu/files/file/73007265655.pdfIn PDF document text
    • https://konzolstudio.ro/uploaded_files/file/31323796408.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/f4daf086620c3e6e452cb12348cf272d/zumakaxuwuxoju.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b644838bf0---57438646327.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=phonics+worksheets+for+3rd+gradePDF 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_off0000e2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BF 11060 bytes
SHA-256: 4124131dec93db66a6a8217a9335824412598616682bdcf15c903b8ed8564e41
font_01_sfnt_off0000fc64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC64 16972 bytes
SHA-256: e401ba1b4d06d5722ec10dc9a86fbecc73ceea9e4eb11d8bb1db23907475b2b9
font_02_sfnt_off000128ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128BA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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