Malicious PDF — malware analysis report

Static analysis result for SHA-256 552d169ee60e19bb…

MALICIOUS

PDF

76.8 KB Created: 2021-11-26 05:03:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: 0c2cd6765c717dee8b00ba5f69b9e901 SHA-1: 3de147271e54ea95801133a882efb81b7cc9a4a5 SHA-256: 552d169ee60e19bb2b7092109713a6c9507efcb07cc928fe134fcd50494d4276
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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://autoscuolapezzano.it/userfiles/files/44771548273.pdf In PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1614f3a8122b65---xolefakatakawabuk.pdfIn PDF document text
    • https://horacebatten.com/ckfinder/userfiles/files/77408303228.pdfIn PDF document text
    • http://gyliver.ru/files/files/99667766747.pdfIn PDF document text
    • http://investinwielkopolska.pl/application/lib/ckfinder/userfiles/files/jaluwogabebusozemivivagim.pdfIn PDF document text
    • https://npkfertilizerproduction.com/d/files/tuwilotapasitukujowodisif.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161998357c3aae---niratixa.pdfIn PDF document text
    • https://bbu.vn/Images_upload/files/gokutunowisipumotumiw.pdfIn PDF document text
    • https://posaonakosovu.com/ckfinder/userfiles/files/pominajosuvupozatevibila.pdfIn PDF document text
    • https://nppmaudaha.in/ckfinder/userfiles/files/6029283219.pdfIn PDF document text
    • http://be-now.pl/userfiles/file/73072919.pdfIn PDF document text
    • http://byecook.com/ckupload/files/zalisigefo.pdfIn PDF document text
    • https://daiichitravel.com/uploads/news_file/genufanimimulijifikapof.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5ff3c5c942e72ce4e3df34b364e4d101/12290016637.pdfIn PDF document text
    • http://strandkrabbe-hohenfelde.de/sites/default/files/files/wakuriwubusa.pdfIn PDF document text
    • https://guitarenko.fr/img/files/55534179214.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/16158313d82ef1---11968236638.pdfIn PDF document text
    • http://ned.ru/uploads/files/repugubuxaxidi.pdfIn PDF document text
    • http://lmleadmanagement.com/userfiles/files/pegogijonolizurepozo.pdfIn PDF document text
    • https://flexi-cms.com/uploads/file/watujizosifasebasovam.pdfIn PDF document text
    • http://cristal-in.fr/userfiles/file/nenanomagerisupabunisoru.pdfIn PDF document text
    • http://kaiyudachem.com/filespath/files/20211029212054.pdfIn PDF document text
    • http://druckmaschinenservice.com/uploads/fce/files/feripariguvetodegezev.pdfIn PDF document text
    • http://qianxi.cn/filespath/files/20210901234824.pdfIn PDF document text
    • http://misr-consult.com/userfiles/file/81396586456.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619696ab41df0---76884125368.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/2I9n2o-U8HI/uplcv?utm_term=geometry+dash+2.11+noclip+pc+downloadPDF 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_off0000c7e5.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c7e5.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E5 16912 bytes
SHA-256: 8c73993a11e53681154ae5d0b19e644bca507423021508ba0e327fa8659e7f43
font_01_sfnt_off0000f404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF404 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00010aa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA8 11256 bytes
SHA-256: 3dcf52d15c79db4d7e37b78cf0e9f2aae9b50b3611427d50a7e95f18989b0c19