Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed49627bc34d60cf…

MALICIOUS

PDF

71.1 KB Created: 2020-12-25 17:30:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27a4d1ae7bd503c317716c7a4e6519fb SHA-1: 48eeb5a47ffc22623938e921eb3383720f4cb175 SHA-256: ed49627bc34d60cf35b6e8b7fa7da865e3d07421e0fe5fc01c2b661f2d106822
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or scam campaign. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/strik?utm_term=business+courses+at+king%2527+s+college+london
    • https://cdn.sqhk.co/nebuneduzib/Ljdhjgh/sbi_online_recharge_airtel_dth.pdf
    • https://cdn.sqhk.co/bibunifez/jcroSjc/sudoku_puzzles_hardest.pdf
    • https://cdn.sqhk.co/nezusoxe/ijyV4gJ/3025981668.pdf
    • https://static.s123-cdn-static.com/uploads/4485714/normal_5fde906f3badf.pdf
    • https://cdn.sqhk.co/vawikepaf/RJpVLnZ/66073488296.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b8f10c70-acb9-47ba-9773-bf2ce249ae22/world_war_ii_timeline.pdf
    • https://uploads.strikinglycdn.com/files/5f0df2cd-bdd3-4179-8726-8c8983cbd2aa/kabogamefasilasulof.pdf
    • https://uploads.strikinglycdn.com/files/a3126cc3-208f-415e-a8d1-5a37226a9d96/what_does_crackles_in_lungs_indicate.pdf
    • https://uploads.strikinglycdn.com/files/2f6b60a8-93f1-4083-a650-b6fd0fcdfe99/reflexive_verbs_french_past_tense.pdf
    • https://uploads.strikinglycdn.com/files/f1351bc7-c329-4309-970c-0cf943c1c351/23100529740.pdf
    • https://uploads.strikinglycdn.com/files/375462af-8c31-49ce-8321-3ad19fac749c/taviwefizimobawozudipa.pdf
    • https://uploads.strikinglycdn.com/files/ce76b348-a2f5-4cf2-8e1f-046f527f37f4/minecraft_0.11_1_apk.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_off0000d9ca.bin
2d29347896e5e9def8c40d139235fac29b607b439ae0e570289941e4a5036c64		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9CA 5252 bytes
font_01_sfnt_off0000ebbf.bin
b075bea96280d66d61315d6061b578274a0ca4c3bae02e8a9afff9fb0766be40		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBF 10408 bytes

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