Malicious PDF — malware analysis report

Static analysis result for SHA-256 8472b0d631b7b513…

MALICIOUS

PDF

89.7 KB Created: 2021-07-31 05:48:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-05
MD5: f28bd7dd216f55f6eebddbe2027b3ac3 SHA-1: dc22c7b21d9bfe297bf1fcf6c8d0b53da42cfd0b SHA-256: 8472b0d631b7b513ae82a5698b051e5f7b8d4ad275582ab42d55128acc6a558c
181 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 7

  • 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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://gemculture.com/userfiles/file/gafozodukab.pdf In PDF document text
    • http://hangtatmj.com/userfiles/23724348945.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/5bd739514043ce1ca4bc92be23135959/14856365515.pdfIn PDF document text
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/fbdc5edb2c636f00e4e2a72d9149da02/fademivoromo.pdfIn PDF document text
    • https://grupahatak.pl/admin/_fck_files/file/20454933225.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/getilovu.pdfIn PDF document text
    • https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160851d6999258---51403807879.pdfIn PDF document text
    • http://podlahypilat.cz/admin/file/61067757862.pdfIn PDF document text
    • https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/tnu6eg04ljnc8g2mo0urpicou1/sejepulonufajas.pdfIn PDF document text
    • http://bulongvungtau.com/media/ftp/file/64535721655.pdfIn PDF document text
    • http://targhevaticane.it/userfiles/files/fulukovoxidofawoxovavupi.pdfIn PDF document text
    • http://epoch-making.jp/js/upload/files/64079554769.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160b9d0b378fd1---kefutiboposokipad.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/745c39c6265864da4734febc656cc07c/waxajusopejifudojotujigu.pdfIn PDF document text
    • https://capitalsyndic.com/userfiles/file/59172456250.pdfIn PDF document text
    • http://gymostrov.org/gymostrov/userfiles/file/50958015444.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/1c406da67e70fa51180628ab3cc84be6/nibovab.pdfIn PDF document text
    • http://alexforstarlight.com/clients/4/41/4125d763bdae894b2c088b8c4c0f4705/File/84362088530.pdfIn PDF document text
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/854be002da4cfac25a9c9cf4f8c7c496/muzas.pdfIn PDF document text
    • https://iskoruma.com/upload/ckfinder/files/88408055335.pdfIn PDF document text
    • http://litho-and-co.fr/ckeditor/upload/files/sidexunutowuxubem.pdfIn PDF document text
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/b822d3f2e8516da6b289787e0dead7ce/zukisusazojan.pdfIn PDF document text
    • http://lhs60to70.com/clients/3/32/32806278e47d7e4d905c37b1d6ebf04a/File/daguvo.pdfIn PDF document text
    • http://usaoxin.com/userfiles/2021-5/file/bivedum.pdfIn PDF document text
    • https://crewmak.ru/uplcv?utm_term=how+to+clean+weber+spirit+210+grillPDF 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 extracted file (font_00_sfnt_off0000fb57.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000fb57.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB57 16688 bytes
SHA-256: ce11d92118af85b452734b5d2ea852d7609b4384e5b361e999cd524b58a08bb5
font_01_sfnt_off000126aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126AA 11060 bytes
SHA-256: 0c984f2aacd901bf803f8b538227f3a783c5a0a5fd854b7ca07851d543014983
font_02_sfnt_off0001406e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1406E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1