Malicious PDF — malware analysis report

Static analysis result for SHA-256 695aa01c04c30265…

MALICIOUS

PDF

88.1 KB Created: 2021-06-29 08:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 0d2230560db74a6b1250f416437d2b85 SHA-1: 8dbd7b247ebfdb9259c5a5abbbb670e4afbae5fe SHA-256: 695aa01c04c3026571f51f62cbf31ec66f3322fb87101cfe46bbc17e5cda4866
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a large number of links, many of which point to compromised WordPress sites and disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to lure users into downloading further malware or visiting phishing sites. The embedded URLs suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/6d9ce249c4312d7967f321c647bd0fa8/bejazobu.pdf In PDF document text
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bb276b72d3b---49164545459.pdfIn PDF document text
    • http://rolmech-strzelno.pl/Upload/file/tuwanus.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b76fa635afa---tegubofeg.pdfIn PDF document text
    • http://ssteelelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fepibuxikoxo.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c119aa4e9b3---lufopufewipejabibuwiwawim.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/42095bf26287bcadbccdea62c9bf89a5/xunesopi.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abf8d01c9f2---zemiritunonutalugibuwez.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ae85a6b3789---womawaf.pdfIn PDF document text
    • http://stolizstekla.ru/userfiles/file/92015021121.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb084b2501d---dituzujogidadiz.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b00974c7a85---kazitebuw.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a42cefc33aa---22625412000.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c89514948---tuxanejo.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/libalusanul.pdfIn PDF document text
    • https://foundryindia.org/userfiles/file/bupisovibadogipolakaked.pdfIn PDF document text
    • http://arredamentoambienti.it/img/file/83229142331.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16086e931bcdc9---5992506012.pdfIn PDF document text
    • http://ideatity.com/ckfinder/userfiles/files/57331640681.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/2a006e6b6a72c1c6b94a610f97aa36be/nafusasotetak.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/fae8e821a74b765df741ca2d9bfdd455/38134120073.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160736f5d89cb9---gumomefotix.pdfIn PDF document text
    • https://mecaniquekd.ca/upload/file/vugarivobode.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=percy+jackson+sea+of+monsters+book+downloadPDF 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_off0000f3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D1 17268 bytes
SHA-256: 237678cfdfb482901691a13db89fd2b83030437256dfb9fc0e4837da3e36c20a
font_01_sfnt_off0001210c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1210C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13923 11108 bytes
SHA-256: cefb36157384f19966e5d5380d07e172997756ccf9b320c49fbe7446f37db3af

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