Malicious PDF — malware analysis report

Static analysis result for SHA-256 008d642a26989fae…

MALICIOUS

PDF

70.8 KB Created: 2021-10-04 03:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 3344c93343b7a84f0d2d45c1b4f24354 SHA-1: e34016302f804503855885029a7a7aa8bfb97d7e SHA-256: 008d642a26989faeb7d4a97bae1b6cf0a850d5c87e2793c48faf75f1115b3b10
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to domains with unknown reputations, suggesting a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a large number of links on disposable hosting, likely to obscure the true malicious destination. The ML classifier and ClamAV detection strongly indicate malicious content within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 http://alliance-ic.ru/uploads/file/pidag.pdf In PDF document text
    • http://porpora.group/imagenes/imagenes_contenidos///gupodofexedurofewar.pdfIn PDF document text
    • https://coolingrealestate.com/your-home-cleaner/FCKuploads/file/rezim.pdfIn PDF document text
    • http://angelofthewinds.net/ckfinder/userfiles/files/wofaviwil.pdfIn PDF document text
    • https://callmarkinvestments.fortunekenya.com/callmark/files/piludiw.pdfIn PDF document text
    • http://belloverde.net/emailer/file/valawuvofijajowinejanuf.pdfIn PDF document text
    • http://decaldankinh.net/upload/files/70083526858.pdfIn PDF document text
    • http://inventory-acepipe.com/images/uploads/files/21038641983.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/8kgn0rgqbnfjmo027t7n9s3hu6/59280747465.pdfIn PDF document text
    • https://optimuselearningschool.com/learning/site/images/uploadfiles/fegurenikebewabudaj.pdfIn PDF document text
    • https://trisyscom.com/userfiles/file/zomemudovugalok.pdfIn PDF document text
    • http://jagdrevier.hu/upload/images/file/64444073682.pdfIn PDF document text
    • https://bokaichenyu.com/upload/files/famoburig.pdfIn PDF document text
    • http://handbook.hu/upload/page/file/bexikubugozolebarasumi.pdfIn PDF document text
    • https://netron.pt/app/webroot/media/files/66955266826.pdfIn PDF document text
    • https://www.gurgy.net/ckfinder/userfiles/files/90112519114.pdfIn PDF document text
    • http://fs-select.com/images/blog/file/38675469004.pdfIn PDF document text
    • http://stacjaregeneracja.pl/userfiles/file/watajodetix.pdfIn PDF document text
    • http://naturallabs.fr/userfiles/file/moxizipulujaf.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16133ac0806b95---57574117763.pdfIn PDF document text
    • http://thevalleytrader.com/files/jetetumavobosagen.pdfIn PDF document text
    • http://musicfriend.vn/public/default/ckeditor/files/54760333379.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=download+crysis+warhead+for+pcPDF 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_off0000af9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF9B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c7ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7AD 17744 bytes
SHA-256: d0358b8ecf34760da7cee72eb0be86c6ad37362cb62acc7b0a2b67ec39703e0b
font_02_sfnt_off0000f4ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FF 10820 bytes
SHA-256: 68648cc1f45f758077302605baafe3e5443c77eae17888f8595e24537a603061

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