Malicious PDF — malware analysis report

Static analysis result for SHA-256 8919969cb1efcf6f…

MALICIOUS

PDF

92.2 KB Created: 2021-08-08 09:25:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 59c396ef3677214893371cd690107b1d SHA-1: 0bcab372fad60c8e8d9395ae6cd413cc190cd623 SHA-256: 8919969cb1efcf6f216ebd94af66926a93ca7b2bd00b1e949a080e54101bc667
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites acting as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for executing malicious code or redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/c5cd4acb09ce2de7bcc7982210c46730/pisojimaxodav.pdf In PDF document text
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/xagorusopobosixo.pdfIn PDF document text
    • http://bwc.lt/i/66572835681.pdfIn PDF document text
    • http://yngc.ru/admin/ckfinder/userfiles/files/14780030930.pdfIn PDF document text
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/rqb4i0jt9m1fi5nplr4j3131k4/28598172329.pdfIn PDF document text
    • https://davaocarrental.com/images/file/77384261311.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/e3144030a179a97c780b5b5954e53985/15097872551.pdfIn PDF document text
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/759ab391aa9f5c0b6cd6b379e3891105/39225195266.pdfIn PDF document text
    • http://tantos.jp/js/upload/files/mavigixubawabeki.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/1713d82d4364ee786730bca5315457a4/paxofunodasazemeze.pdfIn PDF document text
    • http://omonetach.pl/foto/ilustracje/file/bufaxewa.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f99a2561a5---rugatixufivifogakujufek.pdfIn PDF document text
    • http://catgarner.com/clients/873270/File/jumupojalejoludedun.pdfIn PDF document text
    • http://chsbicentennialclassof1976.com/clients/c/c2/c283bfa2537a82fb79a670aa087b4bd4/File/kepemuviwaget.pdfIn PDF document text
    • https://wavesmaroochydore.com/wp-content/plugins/super-forms/uploads/php/files/jhmt0kaihna8pgc97ccvvmqi98/8950867388.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c310586b7b0---momibak.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/rqi9efl63c2gtrpu80ksh5lan0/81677374197.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a4d3a4c7726---rovub.pdfIn PDF document text
    • https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/f348a98d8c053d72eb771cd9a09238db/rowimoro.pdfIn PDF document text
    • http://firanywiktoria.pl/uploads/editor/file/96231010844.pdfIn PDF document text
    • http://12shio5.com/contents//files/pilerinenagebaxusijebexel.pdfIn PDF document text
    • http://www.derbysignandgraphics.com/uploads/file/6536965890.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/r9obflota7qqopnqpuccrlkl8d/62288944835.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/p26jn5uaojpa9tso7gknsf8p9l/pasonudiruzigolulesuneg.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=calendario+liga+mx+femenil+clausura+2020+pdfPDF 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_off0000ff7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7A 11340 bytes
SHA-256: bee9b89562c51e5690e289d3709ae036a04f7293339eff4b2f59b75571565fa0
font_01_sfnt_off000119f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119F5 18432 bytes
SHA-256: 565d6938413602db82854d3d7ce939ec8d976888f8aa1a8c0eaf68fede8ba2f3
font_02_sfnt_off0001496d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1496D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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