Malicious PDF — malware analysis report

Static analysis result for SHA-256 2648af05c96100c7…

MALICIOUS

PDF

89.9 KB Created: 2021-10-10 14:45:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 77b03430a19e830458e9374bf5a92386 SHA-1: 25efe99f4f1c5c4415f4b827d1fdf403940403c4 SHA-256: 2648af05c96100c7260fc8e9cb3020c2778cc62f45dad8e0e3c6a8c2615ee029
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing or distributing further malware. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic specifically identifies this behavior, indicating a malicious intent to redirect users. While no scripts were directly extracted, the PDF structure and URL patterns strongly suggest it's designed to lead victims to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://garglob.ru/uplcv?utm_term=aesop%27s+fables+tortoise+and+the+hare PDF link annotation
    • http://luckdidea.com/ckfinder/images_store/files/262643949.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/tapedozuxolubodil.pdfIn PDF document text
    • http://saaretravel.ee/images/file/52908749772.pdfIn PDF document text
    • http://cdenito.net/userfiles/file/xaxufitex.pdfIn PDF document text
    • https://www.le-domaine-de-hauterive.fr/ckfinder/userfiles/files/wagutarema.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146948f1122e---xidijokavajurazokevivu.pdfIn PDF document text
    • http://1night2daytour.com/ckupload/files/kogamugetagugezo.pdfIn PDF document text
    • https://sonntag-immobilien.lu/userfiles/files/35737753535.pdfIn PDF document text
    • http://secohthailand.com/file_media/file_image/file/53655488922.pdfIn PDF document text
    • https://weldingportal.it/userfiles/file/85428698866.pdfIn PDF document text
    • https://solturism.ro/images/file/94157348709.pdfIn PDF document text
    • http://cambresisemploi.fr/ckfinder/userfiles/files/venoxofutadet.pdfIn PDF document text
    • https://k85shj16h-561lt.com/contents/files/73926476162.pdfIn PDF document text
    • https://www.campacinter.com/image/upload/File/kasuxaxodunesujagoba.pdfIn PDF document text
    • https://billard-hauri.ch/userfiles/file/17004429670.pdfIn PDF document text
    • http://donateagift.eu/userfiles/file/wisijunixesenade.pdfIn PDF document text
    • http://gachbinhduong.com/upload/file/rutolawoxewijixup.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/05cee734c956d7b1f0946c4f8b3f704e/94039520289.pdfIn PDF document text
    • http://dreiseengrundschule.de/files/vunirub.pdfIn PDF document text
    • http://mylivediamondinventory.com/uploads/files/wivizudulugipomajo.pdfIn PDF document text
    • http://solee56.com/ckfinder/userfiles/files/lulifisurarusixujegigoto.pdfIn PDF document text
    • https://reklama71.ru/upload_picture/63726580982.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_off0000f395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF395 10752 bytes
SHA-256: 540bc1674ae22a058f19860ce4f041a0ab6ff0536777e7354e93613d9087df0d
font_01_sfnt_off00010c12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C12 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12424 20884 bytes
SHA-256: 5e9848c0e1634fcb32f13a04599444be56459d5d796cead2f1c7b32873efaa85

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