Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe1a2de8df77aa6d…

MALICIOUS

PDF

98.7 KB Created: 2021-09-08 13:20:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 5e2cc27cc034267a20e6e9a65537aa33 SHA-1: 96e1bec2fab6596dec9f625a731f31b83ce1789b SHA-256: fe1a2de8df77aa6d88498da66955bb6ad60afb71837d97499436416a02cba244
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to compromised websites or disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to exploiting users via these links. No scripts were extracted, but the PDF structure itself is designed to lure users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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://crysiq.ru/uplcv?utm_term=vedantic+meditation+david+frawley+pdf PDF link annotation
    • http://aokisuper.com/ckfinder/userfiles/files/xokeguvefatusolitezan.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/161366abc5268e---10809059322.pdfIn PDF document text
    • http://otohyundaidanang.com/uploads/image/files/matikumatakubalokujaraf.pdfIn PDF document text
    • http://nollve.com/img/editor/image/file/nufur.pdfIn PDF document text
    • https://boumqueur-edition.com/upload/fckeditor/file/4955698570.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/ea5dc896868fa8590d07f04ac25ffa8e/jurivuto.pdfIn PDF document text
    • http://ifaistos.reality.gr/~triantaf/images/file/84319817243.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1612f505639e56---xinuxebasufuwexam.pdfIn PDF document text
    • https://mcq-exambd.bdbabymart.com/app/webroot/ckfinder/userfiles/files/2320603352.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16133711bca2f0---7308466788.pdfIn PDF document text
    • https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/cjsos2sst3a1427v2h77082kjf/jomenadut.pdfIn PDF document text
    • https://santechnikosdarbai.lt/images/files/81434581296.pdfIn PDF document text
    • https://ngoctraithaibinhduong.com/uploads/news_file/30744970373.pdfIn PDF document text
    • http://yenidenyuzlendirme.com/ckfinder/userfiles/files/dinepilojepozusuv.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136be7619447---lipibukowumodimafijakapoz.pdfIn PDF document text
    • http://liveisagenix.com/ckfinder/userfiles/files/72160692006.pdfIn PDF document text
    • http://ebd.su/UFD/7623/files/11338497197.pdfIn PDF document text
    • https://lifesmart.lifesmart.ro/ckfinder/userfiles/files/rilexuduxoliwasal.pdfIn PDF document text
    • http://cdmatik.com/uploads/file/dadijupu.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/161340fbdae3fa---lotem.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/fc95076a3f3bb8c14065a4b98c1ced93/gefixiwapibuv.pdfIn PDF document text
    • https://fenicia.uy/fenicia.com.uy/uploads/files/84819239148.pdfIn PDF document text
    • http://portaldeaquidauana.com.br/ckfinder/userfiles/files/woxuwa.pdfIn PDF document text
    • https://cs168.tw/upfiles/editor/files/77494923472.pdfIn PDF document text
    • http://ms-krmelin.cz/app/webroot/files/files/20890329698.pdfIn PDF document text
    • https://slide-bearing.com/d/files/64885423508.pdfIn PDF document text
    • https://sukienmiennam.com/userupload/files/36324201129.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_off00011bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BC2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000133d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133D9 10848 bytes
SHA-256: 19ab74214142ba3f472ebb88c67af9fec34c1997b75c66a2abda446b9e8759e7
font_02_sfnt_off00014cf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CF1 18584 bytes
SHA-256: d8b84f3263929ce928922091b340cab9e485406ec4bc43928ef0297a05f2f04c