Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d8dec008055b4b…

MALICIOUS

PDF

89.6 KB Created: 2021-07-30 00:12:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: 0b2e7f9ef0e2094831c421db68dfdf51 SHA-1: 61d846eb9751a176adc9556ab00f9e071a8e951e SHA-256: c5d8dec008055b4b9a6f5621dcaf372889fad5eb985dd968dfb018aa4d7f92ce
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://edilgroupdigiovanni.it/userfiles/files/40848821488.pdf In PDF document text
    • http://oletrans.sk/editor_uploads/files/mavabubejoxivurawafat.pdfIn PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/nuqnv1o1qd04n5p9h8urf337rc/wizeleva.pdfIn PDF document text
    • http://kleinschaden.expert/userfiles/file/6965224000.pdfIn PDF document text
    • https://yocarbroker.com/upload/ckfinder/files/nesilotefanowisan.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160fad8951fc12---86059882682.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160d23cf6811cb---97299443894.pdfIn PDF document text
    • http://arredamentoambienti.it/img/file/2846933098.pdfIn PDF document text
    • https://gute-reise.ru/i/files/files/60213095176.pdfIn PDF document text
    • https://absolut-fit-and-dance.de/wp-content/plugins/super-forms/uploads/php/files/tribhmtg1bd86nepv5uqdokruq/22007517109.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607b49032fac9---23995830956.pdfIn PDF document text
    • http://jeyadhurgatemple.com/userfiles/file/takijibufinagimivoro.pdfIn PDF document text
    • http://fence-alarm.com/userfiles/files/93940139064.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072ed3444d5e---80171646057.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/dacgpuqc55o0i6berlf0r5vcro/75596937046.pdfIn PDF document text
    • https://szud94.hu/img/sajatfile/files/bepawirazexu.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/im1a0utjfjd08c03ej4tt6occc/95562247401.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d205693f972---xonemolazefeviwa.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160861710355dc---fuvaguvo.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094617c9f170---7798802709.pdfIn PDF document text
    • http://antonioruizabogados.es/userfiles/file/wugaxigumizomusikegapapu.pdfIn PDF document text
    • http://jcon-aps.dk/userfiles/file/tanopafexuwatona.pdfIn PDF document text
    • http://alexhoffordphotography.com/temp/files/file/54289472271.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bac45d7b4f8---niwawixu.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/26b8e44ff4d4c312c36e29044f4a9ad9/xenotige.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=grade+9+math+worksheets+with+answers+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_off0000fb8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB8C 11100 bytes
SHA-256: aeeefec93331f44253a5c53d6d763c0b1e5414ea82e6a8471a02e8fed3e55537
font_01_sfnt_off00011562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11562 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012d74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D74 16744 bytes
SHA-256: 52f6321f8dc92264af502bbb33c88297c51c7c25d458927758dae9963443b855