Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e7683e72d71a7f…

MALICIOUS

PDF

94.0 KB Created: 2021-09-07 05:27:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 2ce7919cead8fe9352f70390b38ed411 SHA-1: 67b7cada8e21baabe503313c702f251733ceb5a2 SHA-256: f2e7683e72d71a7f23b1ad32baf5f6afbad71d930dcd4ded4052637e805c5bbc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to compromised WordPress sites or disposable domains, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest a phishing or malware distribution intent. Although no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://irlanc.ru/uplcv?utm_term=disha+publication+pdf+child+development+and+pedagogy PDF link annotation
    • http://cy2hand.com/userfiles/61417768118.pdfIn PDF document text
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608693d827477---56207924337.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/16075e1f609b83---19743480441.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0b98aec5b5---73179070208.pdfIn PDF document text
    • https://jahanchart.ir/data/files/file/jawuwezipebagomilixana.pdfIn PDF document text
    • http://historia-bfured.hu/userfiles/file/kidoxojinibobiwo.pdfIn PDF document text
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/7b46c4f2cdcc08b3a54e3604852fabb8/zujosomelosudazeburosadi.pdfIn PDF document text
    • http://pomodorolennep.de/gfx/userfiles/files/44153001539.pdfIn PDF document text
    • https://gofropack.com/wp-content/plugins/super-forms/uploads/php/files/be75f47ff6f0841a9a7c384f7b2eb02b/34710045670.pdfIn PDF document text
    • http://smelawservice.com/file_media/file_image/file/gunuvowufelatukuwoto.pdfIn PDF document text
    • https://anctools.com/ckfinder/userfiles/files/54311918903.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/beweb.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/5f22f095ae5f3e903d24c06dc02409d7/lirogegegobaxitamimeja.pdfIn PDF document text
    • http://aelma.com/sites/default/userfiles/file/25717851205.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3ea03ce04e---zasomesuvebapoja.pdfIn PDF document text
    • http://purpledoorchurch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160868015f0148---92681911851.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/repinukajizurakiwij.pdfIn PDF document text
    • http://www.kymenhome-etsinta.net/tiedostot/files/vipav.pdfIn PDF document text
    • http://studiofagiani.eu/userfiles/files/1948865149.pdfIn PDF document text
    • http://domario.ru/userfiles/file/lazefelofoveminoginokebek.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ac4909af867---leriwenas.pdfIn PDF document text
    • https://northcoteplaza.com/userfiles/file/64207891726.pdfIn PDF document text
    • http://cropscipublisher.com/files/upfiles/file/36038787961.pdfIn PDF document text
    • https://starfoil-mail.nl/uploads/wysiwyg/9960188183.pdfIn PDF document text
    • 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_off00010a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A0E 17572 bytes
SHA-256: 8b1fd9be6e92dc61dda5f22a44b35d8bf206b01fc87b5d75f730f371ccd4b07f
font_01_sfnt_off0001375d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1375D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F74 11388 bytes
SHA-256: 0a03f4da6d01812900710c15037e47f1ab1d933bcb9d42d79750f82a302e0d1c

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