Malicious PDF — malware analysis report

Static analysis result for SHA-256 624f5ab354b487e8…

MALICIOUS

PDF

87.0 KB Created: 2021-11-08 17:00:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-29
MD5: 44621a0b2f7ad4cd6200080dfddd7a00 SHA-1: e5b36b350830a0f0142a13d098919a108d6164d3 SHA-256: 624f5ab354b487e8ffe35ddc381368c229ae8d3e06d52381a044fcf31f6deeff
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1617cc38f2b8df---mubifoxepuvagudel.pdf In PDF document text
    • http://divapharma.com/uploaded/file/zodogibidivekopiwutef.pdfIn PDF document text
    • https://ijpdua.com/contents/files/jetitituxosibijilajajix.pdfIn PDF document text
    • http://worldtile.net/jangheung/userfiles/file/8299106604.pdfIn PDF document text
    • http://schuetzenfest-hemeringen.de/ablage/userfiles/files/70276224208.pdfIn PDF document text
    • http://cosyromania.com/media/file/50792413208.pdfIn PDF document text
    • http://satit.nrru.ac.th/satit/_Adminis/ckfinder/userfiles/files/totozulowijebopojevado.pdfIn PDF document text
    • https://www.tristar-technology.com/ckfinder/userfiles/files/52039567244.pdfIn PDF document text
    • http://gaytonfa.com/upload/files/70939631693.pdfIn PDF document text
    • https://xylemleads.com/userfiles/file/ximebus.pdfIn PDF document text
    • https://culturasiapamplona.com/guiarte_userfiles/files/70410804503.pdfIn PDF document text
    • http://ulsantour.com/FileData/ckfinder/files/20210902_1F6769F14CB648FC.pdfIn PDF document text
    • http://2990592.ru/ckfinder/userfiles/files/59022894058.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614e1d8ae9c77---naxilul.pdfIn PDF document text
    • http://xn--80aer5aza.xn--19-kmcm3c.xn--p1ai/ckfinder/userfiles/files/72260853694.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cf9d1f16bd---zutotora.pdfIn PDF document text
    • https://www.lucaslobker.com/minor/ckfinder/userfiles/files/gegaxajesifawanesake.pdfIn PDF document text
    • http://uniquehotelsolutions.com/files/others/21974634776.pdfIn PDF document text
    • https://textmakareknutsson.se/upload/image/najarazejupugururigu.pdfIn PDF document text
    • https://rabudiagnostic.com/userfiles/files/54227400438.pdfIn PDF document text
    • http://www.gulbaharsigorta.com/contentData/file/sisimo.pdfIn PDF document text
    • http://www.ettermanenterprises.com/ckfinder/userfiles/files/27344401847.pdfIn PDF document text
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/161881fa43375a---64852404080.pdfIn PDF document text
    • https://globalybm.com/ckfinder/userfiles/files/1633907990.pdfIn PDF document text
    • http://nanoscopy.ru/uploads/files/95543158370.pdfIn PDF document text
    • http://sevinctekstil.com/resimler/files/35987594596.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/1hHberoKktI/uplcv?utm_term=the+dark+tower+tamil+dubbed+moviePDF 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_off0000edcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCD 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef
font_01_sfnt_off000104ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104EE 18604 bytes
SHA-256: 2c013e6464b42afa8722af04aa9a619944ce88f26960687b9b06430e78117127
font_02_sfnt_off00013586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13586 10688 bytes
SHA-256: 971309436d14659b16eefe8c7c6788fec49f9818f4a1365c6bd722ee99f5728a