Malicious PDF — malware analysis report

Static analysis result for SHA-256 e08a2fef8eecc6cd…

MALICIOUS

PDF

72.7 KB Created: 2021-03-18 11:24:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 8559fb508f3c8bfb52d48402c59ca21a SHA-1: e6f709c435489235b997311e623510a047ef7cc6 SHA-256: e08a2fef8eecc6cdf41b4e368e3851beca2f1c663a6f00bc5461751fd555d824
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, with a high concentration of them pointing to disposable hosting and suspicious domains. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. The document body, though partially corrupted, suggests a lure related to 'False ceiling design catalogue pdf download', aiming to trick users into visiting malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/award?keyword=false+ceiling+design+catalogue+pdf+download PDF link annotation
    • http://shopbest.online/what_is_plt.legenddtiyn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375073/normal_5fc5ef45095d4.pdfIn PDF document text
    • http://itclick.pro/23412998785nvelu.pdfIn PDF document text
    • http://vuvuga.xyz/scientific_journal_paper_format6ssie.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443344/normal_5fcc5650c46d0.pdfIn PDF document text
    • http://gdztut.com/dc_wire_fused_clapton_guidezmtac.pdfIn PDF document text
    • http://life-news.tech/weather_report_bilaspur_yamunanagard1xzq.pdfIn PDF document text
    • http://raftgjgr.space/geratugexazjyn8.pdfIn PDF document text
    • http://summ-green.fun/tegawedufofifu6z6a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370072/normal_601066104d864.pdfIn PDF document text
    • http://sputnews.com/does_the_stock_exchange_close_early_today26lwn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f6e4430-807f-4961-830d-9465552fc927/29559556199.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ffc3721-14c6-4c2a-be71-3d89868303ed/xutudumonovotekikijaweg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f89a58c-58ce-4e8b-a676-fc90dc97b7ba/what_chapter_does_kvothe_call_the_wind.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/driver_booster_6._4_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/maskeraide_sheet_masks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9421c56f-67a7-4af1-a7f9-094af2ba9f6f/zopesuzumiku.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F0 5272 bytes
SHA-256: 1685ee30717542273317126903512e4c516ca0c1e638ff0df157dd8077a1d774
font_01_sfnt_off0000f30a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF30A 10032 bytes
SHA-256: f4a5635ca7d4b011616dc215485194c15b78ab804b3587382c42edd732a23b2b

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