Malicious PDF — malware analysis report

Static analysis result for SHA-256 80697c5ab9b666d2…

MALICIOUS

PDF

82.9 KB Created: 2021-09-09 09:25:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 682e95ca6ac0f971bf9cd9a1796f4c24 SHA-1: 3e878ed5f1e1218a1a34756d5e935ad134faf83f SHA-256: 80697c5ab9b666d29274a1705f6f377a6287fe0976a61188bfb2dce13c88e2c1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs pointing to various domains, suggesting a link farm designed to redirect users to potentially harmful content. The presence of external URIs and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://coretry.ru/uplcv?utm_term=shadow+fight+3+hacked+apk PDF link annotation
    • http://foxhill101.com/userimages/68018042577.pdfIn PDF document text
    • http://sumisaedu.com/FileData/ckfinder/files/20210902_2A7A3C50B68B3EE4.pdfIn PDF document text
    • http://mariautonoleggiomarsala.it/userfiles/files/73126152494.pdfIn PDF document text
    • http://e-skala.pl/userfiles/file/kewud.pdfIn PDF document text
    • https://apatity.verlauf-ekb.ru/admin/ckfinder/userfiles/files/86669449278.pdfIn PDF document text
    • https://ivanamihic.com/files/vadifitalizutajozagotuz.pdfIn PDF document text
    • https://at2-turbo-j3t.com/contents/files/wimozafib.pdfIn PDF document text
    • http://mh-gartengestaltung.de/userfiles/file/finotanuladonodo.pdfIn PDF document text
    • http://ourpreferred.com/userfiles/files/38533634180.pdfIn PDF document text
    • https://jnnjhansi.com/userfiles/file/matanirazopemuwisovosoja.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16133a643a7df4---goposuxono.pdfIn PDF document text
    • https://bk.knu.ac.kr/ckfinder/userfiles/files/9738268539.pdfIn PDF document text
    • http://kcemsp.org/upload/editor/file/zeruketikonumubidifatupo.pdfIn PDF document text
    • http://3dtechgroup.com/uploads/image/files/31429560420.pdfIn PDF document text
    • http://sklenicky-obchod.cz/web/admin/fckeditor/userfiles/file/95368570529.pdfIn PDF document text
    • https://cahayaapi1.com/contents/files/24644087853.pdfIn PDF document text
    • http://rtm-plus.com/ckfinder/userfiles/files/48100318900.pdfIn PDF document text
    • http://www.egymast-segito.hu/uploaded/fck/file/wanikelexe.pdfIn PDF document text
    • https://intersat.lv/files/file/nolisibitovema.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133ae006e10a---rovuliwizis.pdfIn PDF document text
    • http://hotelborgodeipoeti.com/userfiles/files/7387487073.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_off0000ddf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF9 10904 bytes
SHA-256: 321cfa32f54f4ef9ea104d263ea54316022071fc76be181ac05765997cd7273c
font_01_sfnt_off0000f74c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF74C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F5E 18000 bytes
SHA-256: c1583179c0f5cae382485e79b1dec8eccebfe94fac8f812a92f34d41bc5b9bb7

Open this report in the interactive analyzer, or submit your own file for analysis.