Malicious PDF — malware analysis report

Static analysis result for SHA-256 dea56f7af1a6e3b3…

MALICIOUS

PDF

79.5 KB Created: 2021-03-04 04:22:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: feae72df8800bd7bdcf4a5d5f9300586 SHA-1: b4cf6b4b43f93c56755ed86502353c405d901ad5 SHA-256: dea56f7af1a6e3b39ccecf08465ecab9b887d20f71815753dc4b341ac4d27459
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with the primary one being https://seumenha.ru/wix?keyword=super+fighter+swf, which is flagged as suspicious. ClamAV detection and ML classification strongly indicate malicious intent, likely phishing or malware distribution. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of suspicious URLs and high detection scores point to a malicious download or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wix?keyword=super+fighter+swf
    • http://dolobovofozuz.22web.org/timex_ironman_chronograph_instructions.pdf
    • https://cdn.sqhk.co/ruxuvedije/Cgeijgi/lebara_top_up_plans.pdf
    • https://cdn.sqhk.co/ruzivogawa/gghhhbQ/gujowojikixunusedu.pdf
    • http://vomeperegobo.22web.org/aha_resuscitation_guidelines_2017.pdf
    • http://jexujililizatub.22web.org/olympus_viewer_3_fr_mac.pdf
    • https://cdn.sqhk.co/rabovafom/jfalie2/shark_ion_p50_black_friday.pdf
    • http://bunedose.22web.org/am_i_always_wrong_quotes.pdf
    • http:///goo.gl/CE19nB
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sikuva/xivojadevepizekore.pdf
    • http://lajofekozorofa.rf.gd/51960587235.pdf
    • http://wifobujaxude.epizy.com/zekigokasalejamemipo.pdf
    • http://zufitarevegu.epizy.com/2295107889.pdf
    • https://s3.amazonaws.com/fikuvine/photosynthesis_worksheet_answers_part_analysis.pdf
    • https://s3.amazonaws.com/vizegemawokaxe/brassai_paris_by_night.pdf
    • https://s3.amazonaws.com/lotibabakuj/kezotidegewag.pdf
    • http://tamazodatitemi.epizy.com/wagenisefikozonolepe.pdf
    • http://sutakepaxiru.epizy.com/onion_and_cheek_cells_lab_report.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_off0000edd0.bin
11b8ec4f82edf333a6b0b50244453494a675b0fa278c043792a7316890b13b24		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD0 5116 bytes
font_01_sfnt_off0000ff49.bin
558cf3bbc2221a3bf057a3022c7352fc218f0b9556e53f77e8caaabaac712946		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF49 15584 bytes

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