Malicious PDF — malware analysis report

Static analysis result for SHA-256 04ede2d5a44cb196…

MALICIOUS

PDF

98.6 KB Created: 2021-09-10 06:02:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 5e320f1f4f2540de8e030024112a090f SHA-1: 4df943089f7a4ce6bdb8b56b616241094efeaf1b SHA-256: 04ede2d5a44cb196f5984e7c87f27f3812fcaeb7bdd6828418e89893fc763c37
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://irlanc.ru/uplcv?utm_term=bhaag+milkha+bhaag+full+movie+online+123movies PDF link annotation
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/f790dc99994815cd5d6be44f6a7c45b9/kozozabugobumexe.pdfIn PDF document text
    • http://suriyedostlukdernegi.org/image/files/mituwigakolelosakazogig.pdfIn PDF document text
    • http://ctcinsulator.com/uploads/file/90680449106.pdfIn PDF document text
    • http://hangnhatbanonline.com/upload/files/52609105036.pdfIn PDF document text
    • http://miyagi.chi-kara.net/Upload/files/16962316152.pdfIn PDF document text
    • http://bluecreator.biz/ckfinder/userfiles/files/mojejipopiludob.pdfIn PDF document text
    • http://lokalsport.no/userfiles/file/3806807754.pdfIn PDF document text
    • http://utcsp2.rustyramone.com/uploads/files/tananadatatot.pdfIn PDF document text
    • http://ryukatsu.com/userData/board/file/96322856441.pdfIn PDF document text
    • http://kisito.com/userfiles/file/difilowad.pdfIn PDF document text
    • http://thongthien.vn/upload/files/27174928533.pdfIn PDF document text
    • http://stitesattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/valovurapopajiworise.pdfIn PDF document text
    • http://solemarservizi.it/userfiles/files/kujivoxedanoriralozeju.pdfIn PDF document text
    • http://www.injamal.es/nueva/ckfinder/userfiles/files/48329458508.pdfIn PDF document text
    • http://hotelamadeustorino.com/userfiles/files/15827926388.pdfIn PDF document text
    • http://kunbot.com/upload/files/90470138294.pdfIn PDF document text
    • http://augustaelectricalwork.com/editorData/file/72544955000.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/gileralisufakozadutami.pdfIn PDF document text
    • http://www.ks-klinika.ru/ckfinder/userfiles/files/79441818116.pdfIn PDF document text
    • https://sukaunited4d.vip/contents/files/2694575085.pdfIn PDF document text
    • https://affordans.com/ckfinder/userfiles/files/jolaxekedose.pdfIn PDF document text
    • http://terfigyelokamera.info/files/file/luxerajewojikaf.pdfIn PDF document text
    • http://ccswcd.com/userfiles/file/pizib.pdfIn PDF document text
    • http://animalscipublisher.com/files/upfiles/file/12288577707.pdfIn PDF document text
    • http://naturestuff.nl/siteimages/file/zetovegin.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 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_off000115a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115A1 11256 bytes
SHA-256: 1e7ea0fb4f3c2b3e0bab1f7e01b105ba1c3338edd8cc052aa2c53976b5abd568
font_01_sfnt_off00012ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FFD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001480f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1480F 19780 bytes
SHA-256: 0ede0dd312e693695fe98a7e891f5a9aabef6f58c20f160351e927ba0429b200

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