Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad1235d2b954558…

MALICIOUS

PDF

78.1 KB Created: 2021-08-27 12:46:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 0e7e2936af7bfb2e3de1f91d154d9df3 SHA-1: cfd29da4474ac6d7d56b9d60905dc7a527ccf48f SHA-256: 0ad1235d2b954558503b3cacb06e772d206400557c42be80b4cc5156651b31e8
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The presence of multiple compromised domains and link farms points towards a coordinated effort to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://rosycaffe.com/file/21099133600.pdf In PDF document text
    • https://jagominum.com/contents//files/dadezawirokikegideluxuxo.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9cedd7a09---32564824175.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608e247605773---ritasexenigewasitosoxuko.pdfIn PDF document text
    • http://portaldo.eu/contenuti/upload/file/75809953984.pdfIn PDF document text
    • https://namdolove.com/FileData/ckfinder/files/20210812_F0FFD6D062B7800A.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/95b3ad3bcac331547b89acc7bf04ca11/xowiritobavedovuf.pdfIn PDF document text
    • http://longarmacademy.net/fckeditor/userfiles/file/88649867275.pdfIn PDF document text
    • https://visualarchive.bg/files/50355327664.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/2274db46bb00a67144afd551fff304df/39887650383.pdfIn PDF document text
    • https://ozanetiket.com/TasarimAcarnet/serhali/upload/files/67697425489.pdfIn PDF document text
    • http://tandartsindex.nl/images/uploads/29000004683.pdfIn PDF document text
    • https://implantsdentairesdesmoulins.com/upload/editor/file/vomedipizadenajiw.pdfIn PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/2p80htjfgfsqiqv42t5799t409/20275961491.pdfIn PDF document text
    • http://gospel-pour-100-voix.com/fichiers/newsletter/file/kavokivazonen.pdfIn PDF document text
    • http://mrhobbscoffee.com/images/uploads/file/64023825590.pdfIn PDF document text
    • http://ivankotov.ru/img/lib/file/92050643819.pdfIn PDF document text
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160706b28480fa---rixufi.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/0i986gg3vnlju8jnt71v0h447o/84767602689.pdfIn PDF document text
    • https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/a5548ac69f5b610598fd98fb3fa3a320/fopivufixilarogexez.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609831fd852e9---vemufivuku.pdfIn PDF document text
    • http://alptw.com/images/files/pizijaluraderuguvibok.pdfIn PDF document text
    • http://heibldr.hu/FCKfeltoltott/file/bonelikemewutojujus.pdfIn PDF document text
    • http://tranhdaquyhn.com/uploads/news_file/kepebizipivazigewon.pdfIn PDF document text
    • https://mimpishio2.net/contents//files/80093492690.pdfIn PDF document text
    • http://saikunghouse.hk/userfiles/turabatekedezozibozakiwi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=cheque+bounce+imprisonmentPDF 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_off0000d0a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A2 10848 bytes
SHA-256: b5cba252e24f470c899c4084a38698303eba6d41b57b30c91e1bf9125a403939
font_01_sfnt_off0000e935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE935 15884 bytes
SHA-256: 352dd2da0f76edd467b2f24e4afffb3be6359db7ea7db601e80321e9ceb81971
font_02_sfnt_off00011218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11218 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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