Malicious PDF — malware analysis report

Static analysis result for SHA-256 83e392f88b034f98…

MALICIOUS

PDF

77.5 KB Created: 2020-12-31 03:31:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 31d4cd1013065932947445d27d7114c4 SHA-1: 921823af8ecbdb95621d7ce9357fe4bbe0cfbd40 SHA-256: 83e392f88b034f98ca646e8aa0eb0d9ceb231516ca50b6eb5ea3f625e339816e
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically the URL https://gettraff.ru/strik?utm_term=retract+battle+royale. This suggests the document is designed to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?utm_term=retract+battle+royale In PDF document text
    • https://cdn.sqhk.co/zafupusapun/FhhSgdr/muxexoxigezoxibigoxowepa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387712/normal_5fe64bf780ced.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462736/normal_5fcc0262879b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490116/normal_5fcdc6094976b.pdfIn PDF document text
    • https://cdn.sqhk.co/seponidozit/jgd8FHu/download_game_naruto_ultimate_ninja_blazing_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/zebapomiz/8ihbjjs/ireland_games_euro_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/lotazoza/hYgjiiB/pokemon_go_jolteon_without_name_trick.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b13272d-ab79-472d-9c98-95facf1a8c3c/bepaka.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/biblia_hebraica_stuttgartensia_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87e1727a-4058-403e-ab59-cdf36ca20254/schema_boite_a_fusible_transporter_t4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/273f4ec8-ffd5-4aa6-a747-146d90135871/puwijiwij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32268376-36ff-40cf-883e-a045d3d985d1/kuruke.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://scripts.sil.org/OFLIn 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_off0000de48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE48 4864 bytes
SHA-256: c0bc8e7c3a01d448e996cf691595079cc56ff1e3101b0e8031b6c4e488304854
font_01_sfnt_off0000eeec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEC 10776 bytes
SHA-256: 1c2ce64e766b500bfaf74696cd575ac82f9efbeb2c4e7b8e9ba23bb2d25ac027
font_02_sfnt_off000113c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113C6 16144 bytes
SHA-256: 2a5f1667c2e343500efde63e3dd6a136498333968b1680966ac5eb34589f1174

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