Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e49d9d26456d506…

MALICIOUS

PDF

81.6 KB Created: 2021-09-05 01:38:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 380625d9fced00488903255f4ed3e008 SHA-1: 0745fa24e28da5aeae6bd4aa04824b25542c3167 SHA-256: 4e49d9d26456d50668ecf8e147600a6b20d6697042bd83282a24f42bf91eb877
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ClamAV as a phishing trojan and ML classifiers also indicated maliciousness. The document contains numerous links, many pointing to compromised CMS upload directories, suggesting a phishing or malware distribution scheme. The presence of multiple external URIs and link farms indicates an attempt to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bsinteriordesigner.com/userfiles/files/77488010968.pdf In PDF document text
    • http://glenbrooksouth1970.com/clients/1/17/17fc1bd13d5538a69f39d58c869d2fc5/File/11800307432.pdfIn PDF document text
    • https://lawweb.info/mycms/admin/userfiles/file/bazowur.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/7154a830c297998980ee33f5031c9c8b/5762412271.pdfIn PDF document text
    • http://chinamakina.com/userfiles/file/30766365802.pdfIn PDF document text
    • https://memoservicesrl.it/file/30688042423.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608570ddca719---9525416740.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/xakajeditozonulalarite.pdfIn PDF document text
    • https://ludbaegitim.com/calisma2/files/uploads/43386397861.pdfIn PDF document text
    • https://agronlogistics.com/userfiles/files/bubonuteluz.pdfIn PDF document text
    • https://craftsmancuttingdies.com/wp-content/plugins/super-forms/uploads/php/files/46gcu10pft3726qtl1klgpkamt/60603118267.pdfIn PDF document text
    • http://school19-zav.ru/userfiles/file/54552678402.pdfIn PDF document text
    • http://pmteventures.com/clients/5/57/576e8e71b788aac95a268099fab76a3d/File/76082920776.pdfIn PDF document text
    • http://on-video.com/movies/movie_data/file/xifasurukezudexasosewodaj.pdfIn PDF document text
    • http://kraski-chernila.ru/resources/file/kiguzetubebisojiw.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/e2da28d3d245e4711f36d7c42a8fa362/fizekupazawinaxav.pdfIn PDF document text
    • http://metallpress.ru/files/guzifurazadawelejoj.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/2vajc4cisv2jkcnf240d3rhcmv/34861836693.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/74009549001.pdfIn PDF document text
    • http://sanga.asia/userData/board/file/35714754314.pdfIn PDF document text
    • http://salondebellezaanamariaromero.es//ckfinder/userfiles/files/26519295332.pdfIn PDF document text
    • http://easytravel63.ru/ckfinder/userfiles/files/xikutoriwo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=il+principe+machiavelli+libro+pdfPDF 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_off0000d7f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F8 17808 bytes
SHA-256: c9ab2f5f1f65e5111315f21a06971fa08dd49eef7bfc056fa71eb0d30b417197
font_01_sfnt_off0001068b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1068B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011ea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EA2 10776 bytes
SHA-256: 975072d3f82e886b90a8fa49fae7371e53b672ef57fdd6c5100c6abb52de7565

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