Malicious PDF — malware analysis report

Static analysis result for SHA-256 e95c96d591acaec1…

MALICIOUS

PDF

79.0 KB Created: 2021-10-23 08:49:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: f75160c95e9f682770963fbc9a3403f3 SHA-1: 01fced31d4f137fc3b1a5450a5b3994d5f446e26 SHA-256: e95c96d591acaec131d4d2198eb110a66107a4e68b4c78c1d8ef758cb2ac978e
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of external URIs, many of which are hosted on disposable domains, indicating a link farm designed to trick users into downloading further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lateonsettay-sachs.org/userfiles/file/maraxodogumejuk.pdf In PDF document text
    • http://burragebrothers.org/demo/jolie/beta/userfiles/files/debarapijupurabobubabu.pdfIn PDF document text
    • https://cvssteelex.com/ckfinder/userfiles/files/73653180566.pdfIn PDF document text
    • http://rockefellersgold.hu/editor_up/84629157333.pdfIn PDF document text
    • http://archbot.pl/files/file/vonivakopodanomoraw.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143208c752e9---49051140062.pdfIn PDF document text
    • https://agape4u.org/userfiles/file/bibaxewopol.pdfIn PDF document text
    • http://www.gieskestukadoors.nl/ckfinder/files/files/67398345198.pdfIn PDF document text
    • http://evaemlak.com/userfiles/file///dimesasedilutikiga.pdfIn PDF document text
    • http://toyotaprius-custom.com/js/upload/files/bedilidujomoxajavi.pdfIn PDF document text
    • http://rheumatology.institute/upload/content/file/vekutewamudifefi.pdfIn PDF document text
    • http://a1-automotivegroup.com/upload/files/setef.pdfIn PDF document text
    • http://sungwoo-n.com/userfiles/file/puwofolatalupujipegawilod.pdfIn PDF document text
    • https://ntc-container.com/upload/files/32349812391.pdfIn PDF document text
    • http://alanurturizm.com/rsm/files/87976944736.pdfIn PDF document text
    • http://stin-verdon.fr/assets/Image/files/wupex.pdfIn PDF document text
    • http://tzsunup.com/upload/44600657516.pdfIn PDF document text
    • https://wangwangcamp.com/uploads/files/202110011209246381.pdfIn PDF document text
    • https://nicklason.se/ckfinder/userfiles/files/bewiv.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/56744531111.pdfIn PDF document text
    • http://vwtint.com/userData/board/file/80157961168.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/HTGXzuRVGb4/uplcv?utm_term=excel+chart+to+latexPDF link annotation
    • http://zs.tom.ru/jsplugins/ckfinder/userfiles/files/tusutixav.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d02f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD02F 18332 bytes
SHA-256: b66ad2f96d60d05e359b8de09e0c53bff09d36cc2b18e99546dab5a06b353677
font_01_sfnt_off0001007d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1007D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11894 10048 bytes
SHA-256: 9f5bf4de52596eed2fde9be490c537f7d3e29acbe4fbd06fff51a30612389e22

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