Malicious PDF — malware analysis report

Static analysis result for SHA-256 5527bf2f0064a62a…

MALICIOUS

PDF

76.8 KB Created: 2022-04-08 21:34:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: c89d3822fbf5792c2e5255cd84e127a9 SHA-1: c725334ef4c04d8f1ae3b5954ca6dbf463c26313 SHA-256: 5527bf2f0064a62a136068da9fbe00482f5ae4657e76bdb2d5781a7b4d8c7d4b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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 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://podar.co.za/YmrXLWy8?keyword=ejercicios%20resueltos%20de%20estad%C3%ADstica%20inferencial%20prueba%20de%20hip%C3%B3tesis PDF link annotation
    • https://skvacations.com/userfiles/file/42514203107.pdfIn PDF document text
    • http://www.jw-kids.jp/kcfinder/upload/files/dijiruwagoti.pdfIn PDF document text
    • http://sportsclinicwest.ie/media/contents/file/lamipuzazavoxopo.pdfIn PDF document text
    • https://punebadajunejed.weebly.com/uploads/1/3/4/5/134597598/e4b5082d67a.pdfIn PDF document text
    • https://anciensite.ville-rouillac.fr/docs/file/xarumubexerol.pdfIn PDF document text
    • http://khotelmarket.com/FileData/ckfinder/files/20220303_8A0BEF43323EFEF4.pdfIn PDF document text
    • http://doggystylzgrooming.com/admin/photos/file/mopalezozopisofeguwo.pdfIn PDF document text
    • http://aodaibooking.com/FileData/ckfinder/files/20220325_D7D544CABE59DC94.pdfIn PDF document text
    • https://xotituwidekave.weebly.com/uploads/1/3/4/5/134585458/184f13c1ccd1a9.pdfIn PDF document text
    • https://jitivafume.weebly.com/uploads/1/3/0/9/130969372/zitemovim.pdfIn PDF document text
    • https://self-storage.sg/images/uploadedimages/file/12868467840.pdfIn PDF document text
    • https://indiansabroad.uk/userfiles/file/46479398649.pdfIn PDF document text
    • https://wejowijugoli.weebly.com/uploads/1/3/1/3/131383775/lotilivipeto_kirak_wabibodugurupek_roxaroredexur.pdfIn PDF document text
    • https://gencshow.com/upload/ckfinder/files/8652241479.pdfIn PDF document text
    • http://colfacor.org.ar/administrador_web/kcfinder/upload/files/bowivuraropujevonuzukug.pdfIn PDF document text
    • http://geojeoceanhotel.com/userfiles/file/20220214074852.pdfIn PDF document text
    • http://snnet.kr/board_pds/fckeditor/2022/02/file/zenaxagogedojutejirati.pdfIn PDF document text
    • http://nuestratierrapremios.com/campannas/file/kovedowosafurewak.pdfIn PDF document text
    • http://domplus.su/userfiles/files/86200729145.pdfIn PDF document text
    • http://valdhans.cz/userfiles/file/40081192431.pdfIn PDF document text
    • http://skrn.cz/pic/file/wiwozotunejejunufan.pdfIn PDF document text
    • http://yztools.com/images/upload/File/22151774023.pdfIn PDF document text
    • http://wogo.net/data/wogo.net/uploadfiles/file/31046904173.pdfIn PDF document text
    • http://mustang.tom.ru/jsplugins/ckfinder/userfiles/files/duxir.pdfIn PDF document text
    • 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_off0000c033.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c033.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC033 11272 bytes
SHA-256: c1bcb5574a63f410ea81da76f97ccf15c255b7fdd61282309ce6682c1baa9fe1
font_01_sfnt_off0000d9f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F7 18600 bytes
SHA-256: 76ebb216f24b1a331535e30131cfbe97a8f77af4eb61d93bdb934f2e3c376201
font_02_sfnt_off0001098e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1098E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1