Malicious PDF — malware analysis report

Static analysis result for SHA-256 552d0521ef21adaf…

MALICIOUS

PDF

71.6 KB Created: 2022-04-06 04:33:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: 96f71026aeb6f48c7c81b8e8a195cd91 SHA-1: 0871c084542ff68d1490033551c78850975a533d SHA-256: 552d0521ef21adafcc14475e8c5658207d9921ffae78b027d1d0c7c8ed1920db
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/ploe6p9lslubmflksvdb9ddb2j/46631739100.pdf In PDF document text
    • http://dangkykinhdoanhkiengiang.com/upload/ck/files/16857998605.pdfIn PDF document text
    • https://mivixotagu.weebly.com/uploads/1/3/1/3/131384173/puzawig.pdfIn PDF document text
    • https://keloxexazim.weebly.com/uploads/1/3/4/0/134096686/putaduw.pdfIn PDF document text
    • https://memibufosigi.weebly.com/uploads/1/3/1/3/131383384/4137668.pdfIn PDF document text
    • http://daydreamspin.com/userfiles/file/80968665291.pdfIn PDF document text
    • https://esnd2013.bulletins.be/userfiles/file/menuwibanovavezinigibawad.pdfIn PDF document text
    • https://photojet.net/userfiles/file/2595858191.pdfIn PDF document text
    • http://tamezou.com/upload/ckfinder/files/faxufiru.pdfIn PDF document text
    • https://wavuvavezexa.weebly.com/uploads/1/3/0/7/130775629/dabagek.pdfIn PDF document text
    • https://pemimitajeli.weebly.com/uploads/1/3/0/7/130739011/8162386.pdfIn PDF document text
    • http://greenburysecondary.co.za/kcfinder/upload/files/fabijitiwifilotirixulem.pdfIn PDF document text
    • https://zutofamofiselas.weebly.com/uploads/1/3/4/0/134040676/5964573.pdfIn PDF document text
    • https://tinofapilasi.weebly.com/uploads/1/3/4/5/134518201/gebabixido.pdfIn PDF document text
    • https://sowekunozo.weebly.com/uploads/1/3/5/3/135321923/vifinasamozapev.pdfIn PDF document text
    • https://wazujodi.weebly.com/uploads/1/4/1/3/141373561/166796.pdfIn PDF document text
    • https://zatuzura.weebly.com/uploads/1/3/1/4/131453499/4029129.pdfIn PDF document text
    • http://www.albertoabajolimousin.com/abm/Bibliotecas/kcfinder/upload/files/2294640660.pdfIn PDF document text
    • http://elsped.hu/files/file/gifonetusibojijuju.pdfIn PDF document text
    • http://thuaphatlailongthanh.vn/upload/contentFile/minhchau/file/49627251432.pdfIn PDF document text
    • https://e-s-c.fr/lib/ckeditor/kcfinder/upload/files/tawuseturelam.pdfIn PDF document text
    • https://zurufapejol.weebly.com/uploads/1/3/0/7/130739524/rotijoxo_rovelejomop_jazudonugeti.pdfIn PDF document text
    • https://taninawaporo.weebly.com/uploads/1/3/4/3/134327975/zufuvuno-bolaxul-tisaronadekepaz.pdfIn PDF document text
    • https://ragaz.co.za/YmrXLWy8?keyword=desarrollo%20humano%20papalia%20pdf%2013%20gratisPDF 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_off0000b0a7.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b0a7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b0a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0A7 17400 bytes
SHA-256: 47c9a10c57664fc237933b78216f34ed364fc08f63642e226cbb6ef554fe971b
font_01_sfnt_off0000dce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE4 11268 bytes
SHA-256: 83ad54d5513c9d1d144a85b67796e4df66a90f77a52f53b1f6969833f5375ce1
font_02_sfnt_off0000f6ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1