Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ef45a2b768107d0…

MALICIOUS

PDF

87.8 KB Created: 2021-03-28 10:28:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67b53a38761627055057e7c25fca092c SHA-1: 49da3a1cd7135d8521f4731942b1f030933fd386 SHA-256: 5ef45a2b768107d031db7938462b1ad742a6aa04a70ce80644601fddecb57789
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for credential harvesting or further malware delivery. No scripts were extracted, but the presence of the malicious URL is a strong indicator of phishing intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://dafemum.ru/wix?keyword=mae+open+house+2018
    • http://jalatuxu.iblogger.org/fodezopebo.pdf
    • https://cdn-cms.f-static.net/uploads/4377902/normal_602adc4a6d9cc.pdf
    • http://dijawobal.iblogger.org/anticonceptivos_orales_y_alcohol.pdf
    • https://static.s123-cdn-static.com/uploads/4377377/normal_5fcf0136e89af.pdf
    • http://pafekusiwajida.66ghz.com/28414245605.pdf
    • https://static.s123-cdn-static.com/uploads/4406213/normal_5fca941368dfc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/ebd5aaba-27dc-48e8-b367-4d5d551d6fcc/fidon.pdf
    • http://mujasanowagug.epizy.com/nakenimipesasijanizi.pdf
    • http://vumafovixono.rf.gd/build_up_music_free.pdf
    • https://uploads.strikinglycdn.com/files/0f0fb822-012a-462d-963b-aca9151d9185/best_bible_study_guide_apps.pdf
    • https://uploads.strikinglycdn.com/files/91253486-92d5-4d27-ae42-385d4336c71b/was_or_were_answer_key.pdf
    • https://uploads.strikinglycdn.com/files/6fb3fba8-fef4-433c-ab0c-644c69331192/power_system_analysis_and_design_5th_edition_solution_manual_scribd.pdf
    • https://uploads.strikinglycdn.com/files/5d9be522-5c95-4cf4-9988-f231d783bf5d/the_moon_is_a_harsh_mistress_espaol.pdf
    • https://uploads.strikinglycdn.com/files/29e98ab0-b4cc-4cc7-a99c-bb587afc72fb/rolaxuvafagoko.pdf
    • https://s3.amazonaws.com/sorapobuk/47297917349.pdf
    • http://jitawalidi.epizy.com/vofizivesokenurom.pdf
    • https://uploads.strikinglycdn.com/files/89638752-b8b1-41b4-8b20-281274a56b8e/wirazu.pdf
    • http://barajolu.rf.gd/91575762132.pdf
    • http://komoxam.rf.gd/parking_lot_accident_police_report.pdf
    • https://s3.amazonaws.com/muvemasoxaji/78820966049.pdf
    • https://uploads.strikinglycdn.com/files/d14f37d0-e9f8-456c-9e0b-98774e41ba92/the_boy_in_the_striped_pajamas_summary_chapter_5.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b05.bin
4f0500680f80b1d3acd267959213311aaae91971ac4497b1b95ee63a4903c692		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B05 5056 bytes
font_01_sfnt_off00011c23.bin
1260ec17378c3c80f4c6d462f969019509ce1d84bf546e6f67a0f295931d6133		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C23 11572 bytes
font_02_sfnt_off00014361.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14361 4324 bytes

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