Malicious PDF — malware analysis report

Static analysis result for SHA-256 4061e2815ed0f1e7…

MALICIOUS

PDF

73.1 KB Created: 2021-02-21 17:23:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 42925d93cfe911038388082b1576722a SHA-1: b07c990308a88d20f533d46aa159d422d5d707a9 SHA-256: 4061e2815ed0f1e71eeab44e3692604bb7a950236c30d7554fddc2ca171e6eeb
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 'maypoin.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'Ilocos sur tourist spots', suggesting a lure to disguise the malicious URL.

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
  • 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://maypoin.ru/wix?keyword=ilocos+sur+tourist+spots PDF link annotation
    • https://cdn.sqhk.co/samofetob/eiejbbS/memixenepovupasun.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/ggdXghA/lock_screen_windows_10_wallpaper.pdfIn PDF document text
    • https://cdn.sqhk.co/timadupak/Kjn3pgc/one_punch_man_season_2_characters.pdfIn PDF document text
    • https://cdn.sqhk.co/besiwowegin/PjeHU5G/guitar_solo_ringtones.pdfIn PDF document text
    • https://cdn.sqhk.co/galudubujuwa/9gcx0kR/toy_of_war.pdfIn PDF document text
    • https://cdn.sqhk.co/kosibowo/isBQkjf/26775409022.pdfIn PDF document text
    • http://zinedoxo.22web.org/maths_graph_paper_template.pdfIn PDF document text
    • https://cdn.sqhk.co/samigimas/U4qgUgf/3d_tennis_game_download_for_pc.pdfIn PDF document text
    • http://cozyplacefor.rest/batetipedosopemivo0a5cr.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/winumigutam/fewer_vs_less_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/zopojabanatoxapepezup.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/best_audio_file_format_converter_software.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/71222488255.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/lajiletibujevif.pdfIn PDF document text
    • http://nudibiwer.epizy.com/logical_fallacies.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_off0000e415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE415 4652 bytes
SHA-256: e2a79b04dc428e4620a5307aa1bb8bb12b672e0921bb9739af0c41d05af137a5
font_01_sfnt_off0000f3f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F9 10504 bytes
SHA-256: c7f04293d6e1bc0f2ca29d1d993302a08ec0bdfab90c2d04ad1242fa71649495

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