Malicious PDF — malware analysis report

Static analysis result for SHA-256 abfc3016c98b8934…

MALICIOUS

PDF

76.5 KB Created: 2020-12-21 23:43:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 8cc4122c6e9bb4e4f8d06a5146081642 SHA-1: c178402f36936c2cf7725c839bc9ceace80b41c1 SHA-256: abfc3016c98b893496ec634049fef54732ae7a5e5f6dca92dcb4462eea1f2071
162 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic and ClamAV detection. The document body, though heavily obfuscated, appears to be a lure for a BBC history episode, combined with authoring application details, suggesting a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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
  • 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://cctraff.ru/strik?utm_term=history+of+africa+bbc+episode+16 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4489414/normal_5fb3ce67c9b18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369927/normal_5fa1b93c2764e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418369/normal_5fcc61678060e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455907/normal_5fc6dd96887b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410988/normal_5fdf1bdf6f644.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369141/normal_5fb72d3be0c4e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/torudixir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1cca1dd-5689-41f4-832b-ce159e977ff9/diary_of_a_wimpy_kid_books_full_set.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf415b7ee8e70759d9954/1606218773587/write_better_essays_in_20_minutes_a_day.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5662f0b6b03258f5376ce/t/5fca51fd828dec3afb819d0d/1607094785349/road_riot_mod_apk_revdl.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc32e547848ba205d276709/t/5fcb2f071df7590d80dbc8c7/1607151367739/trick_art_dungeon_apk_obb_download.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/ireport_plugin_netbeans_8._1.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_off0000d7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A9 5524 bytes
SHA-256: e618294e48db0488deeac08a6c72fdd8b121db4035a973103726d6bbee521b46
font_01_sfnt_off0000ea85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA85 10876 bytes
SHA-256: 224c31e85e12f82e98c1783175c1aa7a7288dd8dec87dca01d46abfcb2f3a193
font_02_sfnt_off00010fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FAB 16144 bytes
SHA-256: 7c46bdd5995085f1b667db334183647021a114cb1e9de6240a6a2392c095f0cc

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