Malicious PDF — malware analysis report

Static analysis result for SHA-256 f71919e947f0c43d…

MALICIOUS

PDF

75.9 KB Created: 2021-03-15 15:51:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ce9fb67857059318429f3d909c2dce0 SHA-1: 7ceaabcfc5bc5238b37159e0279c17e9ce41944b SHA-256: f71919e947f0c43d3764ac2d285676e9493f655f6611d43280c55c4d9da62ee1
136 Risk Score

Malware Insights

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

The PDF contains multiple suspicious links, with one explicitly noted as an invisible lure to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of embedded URLs and the nature of the heuristics suggest the document is designed to trick the user into downloading a malicious file or visiting a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://seumenha.ru/wix?keyword=sighted+guide+technique+ppt
    • http://milanbeach.fun/hidden_escape_lost_temple_walkthrough_appunwrapperi5f0f.pdf
    • http://onlinetyz.xyz/confiana_cega_brennan_mannings5grq.pdf
    • https://static.s123-cdn-static.com/uploads/4467593/normal_5fcaf906d45d3.pdf
    • https://cdn-cms.f-static.net/uploads/4418175/normal_6047d20f959bc.pdf
    • https://static.s123-cdn-static.com/uploads/4405654/normal_5ff185725a671.pdf
    • http://securitycheckingbrowservkcom.xyz/cdc_guidelines_post_splenectomy_vaccines17man.pdf
    • http://electrumwallet.buzz/six_trigonometric_functions_calculator_coordinatesj8921.pdf
    • https://cdn-cms.f-static.net/uploads/4500893/normal_601ce58fad62b.pdf
    • http://dehydratedoriginalgoodness.com/sobibuloxijumggpi.pdf
    • http://abistrans.ru/307965133583xbt4.pdf
    • http://italia-doc.space/67441546090qaf5w.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0c316e77-b941-43e6-bd2a-ad0155af0938/15128757893.pdf
    • https://uploads.strikinglycdn.com/files/c4a6b375-1fd1-4d54-9cf4-231cc79d3986/63976150348.pdf
    • http://talagolow.rf.gd/creative_brief_template_logo_design.pdf
    • http://goxabepod.rf.gd/dovim.pdf
    • https://uploads.strikinglycdn.com/files/26185249-682f-4092-bc26-898f9b2ff141/walukanogegif.pdf
    • https://uploads.strikinglycdn.com/files/3b7ae637-3918-4927-b074-0a4c513b8fae/behringer_xenyx_q502usb_user_manual.pdf
    • http://tawenaxogiminax.epizy.com/blackbaud_charitable_giving_report_2019.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eccc.bin
79e8b6c699a2c557bb34ea422b30541168a7f6f7e1a3d9a97bac1297889a6046		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECCC 5048 bytes
font_01_sfnt_off0000fdf5.bin
db497311a92bcc02d91417b079bc1b4ba88aee18a170c889bd6ffe2cd9056bab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF5 10716 bytes

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