Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee4c60fcba1786a…

MALICIOUS

PDF

70.1 KB Created: 2021-04-03 15:46:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 240302a0faf5642e00c84755e4808370 SHA-1: 347e9d380121b9db84c85fb80f0aac11f9ee21e4 SHA-256: bee4c60fcba1786a5ff6eba004a044a5678b059cd5f6952cadd87bf68e75e934
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable hosting or link farms, indicating a likely attempt to redirect users to malicious sites. The document body, though heavily obfuscated, suggests a lure related to 'the logic book solutions 6th edition'. No scripts were extracted, but the presence of external URIs and the overall heuristic profile strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jumiwimov.ru/strik?utm_term=the+logic+book+solutions+6th+edition PDF link annotation
    • https://cdn.sqhk.co/ketusugedi/fLVqEif/82798504462.pdfIn PDF document text
    • https://cdn.sqhk.co/mapelimujeku/ijjsYgj/kizoduduxogomekopir.pdfIn PDF document text
    • https://cdn.sqhk.co/wopidevepip/Yaid0hi/play_christmas_songs_greatest_hits.pdfIn PDF document text
    • http://zesabekuziwuga.iblogger.org/chennai_gana_achu_new_song.pdfIn PDF document text
    • https://cdn.sqhk.co/luwokiseg/ihcqM4H/missile_trajectory_matlab.pdfIn PDF document text
    • http://ripelavezomosiv.iblogger.org/among_us_for_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/bhIbehd/porsche_driving_experience_atlanta_georgia.pdfIn PDF document text
    • https://cdn.sqhk.co/jefigujaxev/jhjhjiy/redream_download_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xavexapoxiv/cjajcZJ/zomipubabaxelewuzisufuz.pdfIn PDF document text
    • https://cdn.sqhk.co/samofetob/IigCjb8/avg_antivirus_removal_tool_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kerutadit/jhBdggS/to_do_list_template_goodnotes.pdfIn PDF document text
    • http://funokeronox.iblogger.org/63393754647.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gojexigubobe.epizy.com/44326727933.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50ab04a8-c3df-447e-9e8d-495b640a1f65/toyota_camry_hybrid_price_in_kerala.pdfIn PDF document text
    • http://bolilolu.epizy.com/is_a_computer_programming_certificate_worth_it.pdfIn PDF document text
    • http://savejanaxejov.rf.gd/gepezejuriniwuf.pdfIn PDF document text
    • http://lopusenegi.epizy.com/kofoxopowugijusarazedibel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/985654c4-8ecd-42d2-bbc9-8b8e6e283b1a/samsung_bd-h6500_remote_control_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfe8e97a-9846-4570-b819-7385f0aa8ab4/kerumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8131bd76-29b8-448c-9099-e0c8a7bc66ef/61938304589.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab54ca51-b6d8-43d9-8339-4a02d2c1c3dc/fujifilm_finepix_s1500_best_settings.pdfIn PDF document text
    • http://vonimamodiji.rf.gd/wantagh_ny_driving_test_location.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A3 5200 bytes
SHA-256: 7c97e3b0d8f21ae58773b629591b43ef3210888c8b7c7e3a1d0970db9d281a3c
font_01_sfnt_off0000e459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE459 10876 bytes
SHA-256: 2c9a505d021d59feb996b05e813eb3b2c76be7dd1610dabcc9c4dcdd38c9c0fd

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