Malicious PDF — malware analysis report

Static analysis result for SHA-256 794ddc6fc59df52b…

MALICIOUS

PDF

80.6 KB Created: 2021-09-10 22:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 26c8bdc5a91f55c04e72734e633c6f4e SHA-1: cd05e6b23d7ef904dc4342cfaddd05d8b8c8e837 SHA-256: 794ddc6fc59df52ba9813acc6bccc2aae5982f7eaed5778ef0afffe0dffc5f8a
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 0.9846

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://gogift-it.com/userfiles/files/72723164830.pdf In PDF document text
    • http://stepasidemedical.com/images/uploads/file/marejorudekuje.pdfIn PDF document text
    • https://vnjhanoi.com/upload/files/lijujemaluba.pdfIn PDF document text
    • https://leosservices.com/userfiles/file/kugudepewokapo.pdfIn PDF document text
    • https://www.dogandemir.av.tr/paketler/ckfinder/dosyalar/files/padivamefa.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/436e7c76e860d2c315c051a8ac3b7c19/79748951298.pdfIn PDF document text
    • http://dainichiji.com/upload_ckr/files/degopilonupilupobakexixix.pdfIn PDF document text
    • http://ronaldtan.nl/images/photo/disebomalanikivipagoxubok.pdfIn PDF document text
    • http://e5tbr.alruaa.com/ckeditor-ckfinder-integration/uploads/files/89654976046.pdfIn PDF document text
    • http://www.globalnautique.nl/upload/files/89750867249.pdfIn PDF document text
    • https://madhubanindiancuisine.com/nbloom/fckuploads/file/60621751039.pdfIn PDF document text
    • https://dortmundpools.com/contents/files/xabijamufa.pdfIn PDF document text
    • http://risme.vn/files/624290613.pdfIn PDF document text
    • http://pomodorolennep.de/gfx/userfiles/files/10757243816.pdfIn PDF document text
    • https://studybrilliant.online/app/webroot/img/userfiles/file/vugibikewumonaga.pdfIn PDF document text
    • http://pickup-ws.com/userfiles/files/64388868097.pdfIn PDF document text
    • http://sushrutproctology.org/ckfinder/userfiles/files/newozojomolan.pdfIn PDF document text
    • http://alocainghien.com/uploads/userfiles/file/fujijukad.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/4205c423355b25cb8ef02247fa66566b/gutegapabuperopadefepafun.pdfIn PDF document text
    • http://namkhoabacninh.com/images/files/3278522940.pdfIn PDF document text
    • https://telewebmarketing.com/FCKeditor/file/jubogugijatekixik.pdfIn PDF document text
    • https://sankaibearing.com/userfiles/files/10654831142.pdfIn PDF document text
    • http://flirdining.com/uploads/files/pitenagoresedokumitobe.pdfIn PDF document text
    • http://chieucoingason.vn/files/98088208423.pdfIn PDF document text
    • http://bhavalaya.org/ckfinder/userfiles/files/nasizoxemukow.pdfIn PDF document text
    • http://needychild.org/ckfinder/userfiles/files/86538608491.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=run+jio+tv+on+android+tvPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d87f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD87F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF096 10236 bytes
SHA-256: 4f16d8cf0bd182dd2613eb9891ba38c53a9e2358e533e180032511ce99521168
font_02_sfnt_off000107a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A5 17912 bytes
SHA-256: 73bd24be3cd56a569fe790e0952f78b5f4a776eafc38f7d86cd398b562ea15c1

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