Malicious PDF — malware analysis report

Static analysis result for SHA-256 df10e83cb6a000f7…

MALICIOUS

PDF

68.2 KB Created: 2021-05-12 23:54:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 984cfd6899a1e9624cd3a947eff51aef SHA-1: 2720d6f074344a6e82140bf3154e03d5d0a804b2 SHA-256: df10e83cb6a000f7e2a4225e94d5d6547fa27ebed57a82f0a130a75ca07b2c93
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 mimics a search query, likely intended to trick the user into visiting a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a phishing or malware distribution site.

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://nipisod.ru/strik?utm_term=what+is+a+word+for+touchstone
    • http://lnstagramcopyrighthelps.com/fegexafirirade4q9kf.pdf
    • http://mon-cmbretagne.best/tb_sheets_lyrics_meaningumv9w.pdf
    • http://waniwidolo.66ghz.com/action_plan_sheet_template.pdf
    • http://salonly.xyz/firex_smoke_alarm_model_fadc_4618_series_manual6m3s8.pdf
    • http://slmit.fun/sezurebagukovakesosexozegasnu4.pdf
    • http://lupexovagin.iblogger.org/berenstain_bears_too_much_tv.pdf
    • http://airbin.top/57619251607jiinw.pdf
    • https://cdn.sqhk.co/bajipugotox/2lb00PV/17260950264.pdf
    • http://drilltech.info/digimon_story_cyber_sleuth_digivolutw25ud.pdf
    • https://cdn.sqhk.co/riwaxagi/Yhi8gfM/picsart_wallpaper_hd_2019.pdf
    • http://copyrightsupport-ig.com/12339062262pfyu0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/murudute/90679888942.pdf
    • http://lesolasate.epizy.com/barron_s_essential_words_for_the_toefl_free_download.pdf
    • https://s3.amazonaws.com/wokesabisevo/zinifevagirabijetubezumik.pdf
    • http://mutidulofof.epizy.com/onde_ler_livros_online_gratis.pdf
    • https://s3.amazonaws.com/sugowubuf/skateboard_bushings_hardness_guide.pdf
    • https://s3.amazonaws.com/vavapekadoliti/jobagula.pdf
    • https://s3.amazonaws.com/ligole/86580739670.pdf
    • http://peregal.epizy.com/sap_bpc_410.pdf
    • https://s3.amazonaws.com/dazovosugev/major_depressive_disorder_guidelines_2019.pdf
    • https://s3.amazonaws.com/vesubodufisi/what_are_the_five_laws_in_the_go_giver.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_off0000c545.bin
6f6678a2710f1dbe12d6f52139b6625d8e56d9165b632f107a1aaf81d41ea98a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC545 5064 bytes
font_01_sfnt_off0000d687.bin
2004e69a6ca33aa025dddcd2432fab5d9345e181eae7027fde34f8751a3cce35		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD687 9116 bytes
font_02_sfnt_off0000f59a.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF59A 4324 bytes

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