Malicious PDF — malware analysis report

Static analysis result for SHA-256 c86970f0518e3cba…

MALICIOUS

PDF

77.8 KB Created: 2021-09-13 10:51:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 95e9fe61f40e03c0ce32e80b3ea1a008 SHA-1: c3a97a8c8cc865da626e45db4c940db4be337441 SHA-256: c86970f0518e3cba4529523c5ecc1665be234dd56f870572663a096e50c84cda
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs and is identified as a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. The PDF structure and embedded URLs point towards an attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://huntic.ru/uplcv?utm_term=android+os+hacks PDF link annotation
    • https://shoppingplanet.ro/ckfinder/userfiles/files/wefipipexag.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613107d12de4a---23770144280.pdfIn PDF document text
    • https://bkairconditioner.cloud4demo.com/uploads/files/7123224686.pdfIn PDF document text
    • https://podgoricki-klub.me/userfiles/file/26893824676.pdfIn PDF document text
    • http://oodow.cn/upload/file/210912011810400715gg7pz0j6kdpr.pdfIn PDF document text
    • https://majorsagilekvaros.hu/uploads/file/37412869038.pdfIn PDF document text
    • http://jandenzobv.com/image_uploads/file/molaxipegaj.pdfIn PDF document text
    • https://equinox-e.com/upload/UserFiles/file/16071199665.pdfIn PDF document text
    • http://ets-sptk.ru/pic/file/pokefun.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/vegixeso.pdfIn PDF document text
    • https://fotobolfestmeny.hu/mvc/userfiles/file/jedurajijolu.pdfIn PDF document text
    • http://joyerialaplaza.com/ckfinder/userfiles/files/97557590171.pdfIn PDF document text
    • http://www.klimavill.com/data/editorfile/76978448070.pdfIn PDF document text
    • http://rockhouseschool.com/rockhouse/uploads/files/bedojosisogawa.pdfIn PDF document text
    • http://thienthaopc.com/upload/FCK/file/233963674.pdfIn PDF document text
    • http://daiichihousing.net/uploads/news_file/10532028833.pdfIn PDF document text
    • https://megalightgroup.lv/uploads/files/67998706457.pdfIn PDF document text
    • https://tranhtreo.com/images/ckeditor/files/biwalelawate.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613134dbb9a2b---29961125598.pdfIn PDF document text
    • http://www.mariabeckmann.com/fotos/uploads/files/59522257765.pdfIn PDF document text
    • http://almawred-sy.com/files/adminfiles/files/mizevazibobozun.pdfIn PDF document text
    • http://say-international.eu/userfiles/file/zunufoxiji.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

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_off0000ce24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE24 17136 bytes
SHA-256: b80df08e1821a23abbcd555710857390b07298963b258882e432958b3ddeddd9
font_01_sfnt_off0000faad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAD 10264 bytes
SHA-256: e64b9d159d6d41bc9d19d655e0af8f91ecca194a0cc0a01242a640c975f2182b
font_02_sfnt_off000111b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111B0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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