Malicious PDF — malware analysis report

Static analysis result for SHA-256 08b942c206be154a…

MALICIOUS

PDF

84.3 KB Created: 2021-09-01 00:29:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 9e42fe1dc6d2b8172c544e696dc280a8 SHA-1: f00aa86498f13382f4d818fa6f42fb398a629cd1 SHA-256: 08b942c206be154ac393a4b73ddeb42dcb4d822f894a6267f5fb4a6fcd7c4dab
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised or disposable domains, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://normel.org/files/upload/file/tokebupakunofegelusirogi.pdf In PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1609058a5c4a98---83421301865.pdfIn PDF document text
    • https://www.borzabadi.com/ckfinder/userfiles/files/mozibudugozuwonemomare.pdfIn PDF document text
    • http://fantacyhandicraft.com/userfiles/file/tapinowiminoxu.pdfIn PDF document text
    • http://bogelaipigeon.com/upload/file/goxolonevenifato.pdfIn PDF document text
    • http://fotosvatba.net/userfiles/file/kuzuzudamalabopowav.pdfIn PDF document text
    • http://immodraft.de/images/architekten_agentur_images_/file/filebariradagitu.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9800b9f841---goxidakuvowinal.pdfIn PDF document text
    • http://remobudostol.pl/pliki/sezawomutu.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080a6d22b21d---85177130520.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/9blbf3f6htie7ct6msiianpbi5/linabo.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/8727b963007789b8944e8c939f073f8f/sapazukoxunawaw.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/2c9d63d24b7c4e86656152229dabba55/goxiwejidazujukilatim.pdfIn PDF document text
    • https://smartcrm.cloud/upload/files/moresujonolanunaka.pdfIn PDF document text
    • http://zentrumok.com/userfile/files/44772186232.pdfIn PDF document text
    • https://gs-hemeringen.de/ablage/userfiles/files/mubizarafalezakuj.pdfIn PDF document text
    • https://immobilgold.com/file/39450413197.pdfIn PDF document text
    • https://kangaroovietuc.vn/webroot/img/files/wizadiwojeduwimitovo.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160ac66c03794d---famigi.pdfIn PDF document text
    • http://j-club.eu/userfiles/file/19522023699.pdfIn PDF document text
    • http://kovospm.cz/fotky/file/gepujididobaxovatisogeji.pdfIn PDF document text
    • http://praguetransfer.com/files/file/xalusafelifig.pdfIn PDF document text
    • http://drironcat.com/images/file/49013171848.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=comprehensive+accreditation+manual+for+behavioral+health+carePDF 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_off0000e036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE036 17728 bytes
SHA-256: c55cb5f7cdf3268cd4fe1ae1015dfa778792589d97b5b21846d496b59d0d8f50
font_01_sfnt_off00010e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E8F 11220 bytes
SHA-256: 54958cf7ef85bd7a67dd563016752be8ef491a195997646200280dd24a2c1add
font_02_sfnt_off0001287d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1287D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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