Malicious PDF — malware analysis report

Static analysis result for SHA-256 b00d955c63fe76d9…

MALICIOUS

PDF

77.7 KB Created: 2021-09-16 01:59:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 5be3aff3e7ebe41c55273a2243af5540 SHA-1: 544ae58bcdfbdf6a69543951ae2d7de0b7a8129f SHA-256: b00d955c63fe76d9fd1c55af917a277df56718a544e87373bc00545cc986713b
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application

The file is a PDF containing embedded JavaScript, which is often used to exploit vulnerabilities or redirect users to malicious sites. The 'SE_MFA_LURE' heuristic indicates the document is designed to harvest credentials or abuse multi-factor authentication, consistent with phishing attacks. The presence of numerous external URIs, many pointing to PDF files on unknown domains, suggests a link farm or distribution network for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

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
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.wappa.com.au/siteadmin/ckfinder/userfiles/files/57775652640.pdf In PDF document text
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/sixijej.pdfIn PDF document text
    • http://anhuizpyy.com/upload_fck/file/2021-9-8/20210908125643139797.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/of77u4809fgerga824lkci8bo1/baninud.pdfIn PDF document text
    • https://nezrenweb.com/calisma2/files/uploads/mununugukulaxosidopejusuj.pdfIn PDF document text
    • http://ghefootmassage.com/fckeditor_userfiles/file/26369353625.pdfIn PDF document text
    • http://aktifithalat.com/resimlerfiles/44861582383.pdfIn PDF document text
    • http://frigotechreina.com/userfiles/files/nuwav.pdfIn PDF document text
    • https://indicaperu.com/userfiles/file/13799255041.pdfIn PDF document text
    • http://maraulsan.com/ckfinder/userfiles/files/47678244613.pdfIn PDF document text
    • https://treasurehunterdetectors.solar-ovens.net/ckfinder/userfiles/files/85334436959.pdfIn PDF document text
    • http://miet-boot.ch/images/uploadedimages/file/82686756887.pdfIn PDF document text
    • http://casier-a-bouteilles.fr/file/xudizuvimurajipowuledoxu.pdfIn PDF document text
    • https://radiosmile.hu/upload/file/25686430899.pdfIn PDF document text
    • http://asfalon.com/__files/file/fifogerinudezovuwowexa.pdfIn PDF document text
    • http://detikakdeti.ru/img/file/84146884589.pdfIn PDF document text
    • http://gtlfuelmarine.com/userfiles/file/25449683474.pdfIn PDF document text
    • https://igraonica.me/userfiles/file/39945560929.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/161387bb4cca9e---1648638251.pdfIn PDF document text
    • http://topspeed4wd.com/ckfinder/userfiles/files/migerofemigigabav.pdfIn PDF document text
    • http://kruengrangthai.com/files/files/60880167747.pdfIn PDF document text
    • http://djpress.pl/Image/files/noruf.pdfIn PDF document text
    • http://sun-marche.com/app/webroot/js/ckfinder/userfiles/files/74466257610.pdfIn PDF document text
    • http://falconfam.com/ckfinder/userfiles/files/70402786080.pdfIn PDF document text
    • http://proxima-design.cz/files/file/17371376146.pdfIn PDF document text
    • http://iglozawiercie.pl/zdjecia/file/folaxotefigegagefurojixiw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=hello+movie+appPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE9B 17164 bytes
SHA-256: 56a24cc1d4e48a16c2ea47162d462679a5ce78ec62558952aea456dbcb922fad
font_01_sfnt_off0000face.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFACE 10000 bytes
SHA-256: 9534a4f45b19e1584910b494b5efde85848d9e63c7668d9480e0b16ee652126a
font_02_sfnt_off000110ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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