Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd6c01bed813819…

MALICIOUS

PDF

86.0 KB Created: 2021-10-12 15:35:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: a29032f23eaa5add456079ae8971fdbb SHA-1: 583c7bcc06a3b1a007e8e3e6b68306f2a5fbce3b SHA-256: 3dd6c01bed813819f49e63758933e20c4cad1d3c6f5e92c08391a755e8128d42
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://medtek.vn/storage/file/vitovazakazorapo.pdf In PDF document text
    • https://maytinhdalat.vn/images/uploads/files/nawenikuterenijifaberesap.pdfIn PDF document text
    • http://pensionpoint.cz/userfiles/files/43193652281.pdfIn PDF document text
    • https://bibliotheque-des-arts.ch/ckfinder/userfiles/files/votarux.pdfIn PDF document text
    • http://share-world.tw/userfiles/file/newizufeku.pdfIn PDF document text
    • https://baobiachau.com/luutru/files/girodozitosid.pdfIn PDF document text
    • http://harlit.com/upfiles/file/fexadatixela.pdfIn PDF document text
    • https://brincandoeaprendendo.com/fotosempresa/files/berevavokepipabuvolasixiz.pdfIn PDF document text
    • http://ansonseatery.com/uploads/files/lusukumafaki.pdfIn PDF document text
    • http://beloezoloto.ru/userfiles/file/31479423619.pdfIn PDF document text
    • http://mirutte.com/newsfiles/files/59034701329.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/e64a36550bfe428417ec53127c93f997/sezaxuwiwapegalidikogo.pdfIn PDF document text
    • http://electroagro.es/pub/files/tumisafenobujep.pdfIn PDF document text
    • http://icltindia.in/userfiles/file/fenobovujidomuwujuve.pdfIn PDF document text
    • http://szigmetal.hu/editor_up/17594833590.pdfIn PDF document text
    • http://xn--h1acbpobggs.xn--p1ai/data/files/90160576008.pdfIn PDF document text
    • http://mrs-edu.com/sribati/editor/uploadfiles/kezitemixakubexamewemuk.pdfIn PDF document text
    • http://ahzycw.com/upload_fck/file/2021-10-1/20211001085322369429.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///11034053488.pdfIn PDF document text
    • http://ural-resyrs.ru/data/file/masegitowikumipekugab.pdfIn PDF document text
    • http://ldkxzzs.com/images/userfiles/file/82987345162.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/2ba6102042ec9ace5b587a1f453f64f2/pozezegoziwuvivakogan.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615a790884381---nofufuseluboboru.pdfIn PDF document text
    • http://duancanhotot.com/upload/files/xanutaligolaj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/6Zflnl449io/uplcv?utm_term=that%27s+your+cue+meaningPDF 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_off0000ec8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8F 17360 bytes
SHA-256: bf761f6e0df3f4d7c5786140b01a597972f3229c3269b1906d5753b92511d7ea
font_01_sfnt_off0001196d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1196D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13184 10844 bytes
SHA-256: d7e7a31e00978ec0ae7e1dfc8affdbd0bf83dad9bc1df88f955318ca3bf3f5b9