Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c0f2269f3905728…

MALICIOUS

PDF

89.4 KB Created: 2021-08-07 13:15:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 4603994e435556fd24c7796d7eb1e5c7 SHA-1: 3d561a1d4e3fd1c6d06a5b7b759f81fc616fae94 SHA-256: 6c0f2269f3905728d3c978b6705a5b16e5878541b3e9fe42fe847ae910d2d72c
156 Risk Score

Malware Insights

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

The PDF file contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users. The presence of a 'minecraft pocket edition pc windows 7 download free' URL indicates a lure to attract users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://atmaircenter.com/lb/userfiles/files/xixodilawagusu.pdf In PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/b231b6bb5601d948befbc9517e4547de/xefovis.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a126400b77c---gojurubijudedebegekapiko.pdfIn PDF document text
    • http://normandyclassof79stl.com/clients/e/e1/e16d7b8530e96d8d426d6b963c92b0b5/File/kijabulanetinewazes.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f9055f69e0a---83106337156.pdfIn PDF document text
    • http://detskaoptika.cz/ckfinder/userfiles/files/puwamalenuvinisifanudofe.pdfIn PDF document text
    • http://htygroup.com/upload/files/fujojokiwozututikugejok.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ec5245cba82---nejegexabonexuz.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/93950588626.pdfIn PDF document text
    • https://bloomeng.com/uploads/7034881316.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609316fad4721---dogoxudusikaruxojej.pdfIn PDF document text
    • https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a47b76a2034---62271809103.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/36171413406c62c8a28ac47001a77c1b/33955645756.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/3e5a3ee4316da1e80cd5da9147298cb4/40834841964.pdfIn PDF document text
    • http://hyundaidongdo3s.com/images/files/70421493234.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160852c2e8eb75---vuguwozalunufuge.pdfIn PDF document text
    • http://raykingcarroll66.com/clients/2/29/292092747e06e0ab09130fa737b110c0/File/41521682956.pdfIn PDF document text
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/160905816aaa46---bugefopalikofebevawemizox.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e4c7fbfba8---vitelajowidopuxezeramemid.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/6a5949bb599cb1aaa9aa7ab591504ae0/65989778424.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/2d194c6b5c4156b7d2edca9161f0713c/watolarowevefujomomuj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=minecraft+pocket+edition+pc+windows+7+download+freePDF 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_off0000f99d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF99D 16932 bytes
SHA-256: 692aa35e260db9e2303ec8ce92fd708f58a1222fa080388de34dfedd32d61c0b
font_01_sfnt_off000125e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125E2 10832 bytes
SHA-256: 2e4863a98b0962147c864b9e95cf27b016fb8dc53e59fb24e1d834fc2e3ef19a
font_02_sfnt_off00013f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F22 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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