Malicious PDF — malware analysis report

Static analysis result for SHA-256 d977e2d0bb810851…

MALICIOUS

PDF

69.6 KB Created: 2021-10-02 15:34:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b94dd603af1c0975a33f965e20471e8a SHA-1: 586772852fc35082f1e4d3e3163ef2625f678403 SHA-256: d977e2d0bb81085169b5513ed10bc5f7839783ce0fbe6b8d6cba373dd94abf11
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable domains, suggesting a link farm or redirection mechanism. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a high likelihood of these links being used to direct users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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 http://brianhaymore.com/images/e/file/61188438283.pdf In PDF document text
    • https://open-call.fr/uploaded/files/37967543320.pdfIn PDF document text
    • http://konditsionery-reutov.ru/upload_picture/file/vixotivaf.pdfIn PDF document text
    • https://berettyobne.hu/userfiles/file/567809874.pdfIn PDF document text
    • https://sua.vn/uploads/userfiles/file/fixovixilamofudimimujexev.pdfIn PDF document text
    • http://nessium.fr/userfiles/file/65997703786.pdfIn PDF document text
    • http://pokwuttibut.com/file_media/file_image/file/39095090342.pdfIn PDF document text
    • https://dom-titan.rs/files/63021934432.pdfIn PDF document text
    • https://elegune.net/files/galeria/files/mowur.pdfIn PDF document text
    • http://goodlack.cz/userfiles/file/siwoteliwidawifuvinarisu.pdfIn PDF document text
    • https://cdmsig1.com/ckfinder/userfiles/files/kisebezoxuzinut.pdfIn PDF document text
    • http://xn--90afqerdlt1f.xn--p1ai/admin/ckfinder/userfiles/files/joxijukujafadupotorogi.pdfIn PDF document text
    • http://ttccid.com/userfiles/files/safatamap.pdfIn PDF document text
    • https://kompaspt1.com/contents/files/26722075283.pdfIn PDF document text
    • http://kingtonkatsu.com/uploads/files/kijorogegetanuk.pdfIn PDF document text
    • http://imosa.asia/uploads/files/202109270011001133.pdfIn PDF document text
    • http://www.feniuniversity.edu.bd/app/webroot/ckfinder/userfiles/files/60190321273.pdfIn PDF document text
    • http://sgpeo.pl/users/file/pasimujotixijoxoparuv.pdfIn PDF document text
    • http://kozelskadm.ru/files/uploads/files/jabupulewetuvi.pdfIn PDF document text
    • https://tourpon.kr/FileData/ckfinder/files/20210921_564851E80E62EF09.pdfIn PDF document text
    • https://zzhqhi.com/d/files/69909879481.pdfIn PDF document text
    • https://gmnavarra.es/ckeditor/files/wemokawezabasegosunazabo.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/168e0e2585a7c4dd065e6ce87f015c35/50896023048.pdfIn PDF document text
    • http://ore-processing.ru/d/files/mitedosarolenavositaxo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=how+to+go+down+from+flying+in+minecraftPDF 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_off0000ae4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE4E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC665 10844 bytes
SHA-256: 0a9a9c760c3e48f553968f70fa10b89e740eb1a651963b31a1e6778508dc77ae
font_02_sfnt_off0000df33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF33 15808 bytes
SHA-256: 3249c64c800fed8f70f5d308582dc18fa666ea833eaf34e6d28de2623aea42a4

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