Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc1ef455598bdb7…

MALICIOUS

PDF

76.4 KB Created: 2021-09-08 08:52:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: 32b53c634730cfa9323d7f3e30671542 SHA-1: cc6da51403d57a9bae1539279a1f4483124678ea SHA-256: 1dc1ef455598bdb7e8debbbe93761d7cb78d064ea1fdb6b1e557e600f4a558ce
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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 http://danburyhighclassof1961.com/clients/b/b4/b42d7d7907ff1a67dd6fd366dd3c6775/File/favifani.pdf In PDF document text
    • http://ajivikafinance.com/userfiles/file/21476935975.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/rl658h4db9v948su63pr6sg053/koremixisu.pdfIn PDF document text
    • http://velapower.com/glwh/UploadFile/file/2021082807571073499.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a048572e350---51567892479.pdfIn PDF document text
    • http://siciny.pl/userfiles/file/66352386995.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16075ac8a36f12---xizof.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/24151f9b8fa03409329e3ce62c88a920/zizevazukobuvowebax.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/35204023345.pdfIn PDF document text
    • http://jiachuankeji.com/upload_fck/file/2021-9-8/20210908091406254308.pdfIn PDF document text
    • http://devison-matras.com/upload/file/3226592110.pdfIn PDF document text
    • https://muguet.fr/sites/default/files/file/1458031051.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dea95aa09fd---sutujano.pdfIn PDF document text
    • http://sumbulefendiegitimvakfi.com/resimler/files/nuriwojidalobetusofave.pdfIn PDF document text
    • https://darshanam.com/ckfinder/userfiles/files/rimofuvirarabimogujelok.pdfIn PDF document text
    • https://www.traitagri-solutions-alternatives.fr/ckfinder/userfiles/files/75277884199.pdfIn PDF document text
    • http://ascensionchina.com/userfiles/file/nojelodufikowabe.pdfIn PDF document text
    • https://dangeloremodeling.com/nbloom/fckuploads/file/66126971864.pdfIn PDF document text
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/3asqfetkv1l6mslrj4ite7t4qg/fasupux.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/vodalemijetabijewes.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/d6ede9cc5a911bfa05dac38826aca59f/62025674453.pdfIn PDF document text
    • http://gjbbang.com/userData/board/file/50937690578.pdfIn PDF document text
    • http://glastergroup.ru/userfiles/file/wujuperozizabe.pdfIn PDF document text
    • http://circolonauticofavignana.it/userfiles/files/73223860432.pdfIn PDF document text
    • http://hsiwww.com/image/files/20210721_151721.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=persuasive+article+worksheetsPDF 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_off0000c660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC660 17516 bytes
SHA-256: b5602e5c6cd6b14bd193ba21cb799ab0956f0f8f87f6001f7f5f83a8eee42b3c
font_01_sfnt_off0000f39c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF39C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010bb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB3 10568 bytes
SHA-256: c24784c3a62b8ab32513aeca6698c2d79e37972f03e4ab1f7d212614b8d56a15