Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ab2f29374c764c…

MALICIOUS

PDF

90.2 KB Created: 2021-09-01 10:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e1eb89eee6b8a531e585dc5478d8aaf8 SHA-1: cae5d5e9db520155032c241d959e83b6773ae432 SHA-256: 70ab2f29374c764c8fb5dfeb015b66db10ad13cf5e3c4494be33cf1bb524a6b2
156 Risk Score

Malware Insights

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

The PDF document contains a link farm, with multiple URLs pointing to compromised CMS uploads and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of numerous links suggests an attempt to obscure the final destination or to leverage multiple compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://ailani.org/wp-content/plugins/super-forms/uploads/php/files/ff45b9980e2ecf03046138ca8ccc3e72/bujunuxe.pdf In PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/85mt4158878tob3rg7242e0lnf/35344856142.pdfIn PDF document text
    • http://pharmabiosolutions.com/filespath/files/20210810012547.pdfIn PDF document text
    • http://aiken7050.com/clients/5/51/510ae66c864a6d23552e02d1b5190e2c/File/19415826327.pdfIn PDF document text
    • http://privateeducation.sg/verzsape/demo/upload/admin/files/laror.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/12bcf364c4be80a3e5d5971f22fb39ca/takarijobufejaxus.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/cb27d79f418a0b56ea0cd6f9daab20b3/98281856138.pdfIn PDF document text
    • http://heorungminhphat.com/luutru/files/gixufu.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/k05i88vssehs9c14be9j5dgol3/67199418207.pdfIn PDF document text
    • http://ana-jsc.com/upload/files/53400132424.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/f297cdc6969301db2d773a7a6600c0f6/vegudosifamerirokedi.pdfIn PDF document text
    • https://imagebeaute.fr/userfiles/file/dibunatizekuromapax.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/mugimetoroxupiwoviwaxaw.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/a2048c4e1072c0123da16dbf076ad96b/88344223120.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/161079a99152b5---28225169776.pdfIn PDF document text
    • http://www.pics4us.de/userfiles/file/1734012704.pdfIn PDF document text
    • http://bienchidan.org/uploads/files/wupadorizamamumupafuxul.pdfIn PDF document text
    • http://elma1.ru/!upload/files/nizipizuvaguwafiweguwu.pdfIn PDF document text
    • http://grupopiscis.com/upload/files/31556714571.pdfIn PDF document text
    • http://nomorecpapmachine.com/userfiles/files/78564117733.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/67e5a5497ad45d15ee516c277ab54016/gozarunagifezo.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160857cd126aa9---59819009198.pdfIn PDF document text
    • http://geoass.eu/userfiles/files/debaxabujetirisosa.pdfIn PDF document text
    • http://barcelonasixtytwo.com/userfiles/file/67352967086.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=instant+family+full+movie+online+free+watchPDF 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_off0000fc97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC97 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000114ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114AE 10920 bytes
SHA-256: 7e499e75ce05a9c59fb0e25eb151644f8de0ca66e075370f778c04432948e65d
font_02_sfnt_off00012ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DDB 17564 bytes
SHA-256: e8c7893a57de03738164a751165d03c55ee09ae391403053dfa9d6e35ce0686f

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