Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ef4ac61853aa4c…

MALICIOUS

PDF

76.0 KB Created: 2021-02-16 01:52:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: dc9e653ee91307704d7c36f121d8083c SHA-1: efcc9d59e2c98cd03550b2a507f41985787f21e2 SHA-256: f2ef4ac61853aa4cd5557a627ad3a3a100608cac70a2f24b9d8a78df1a5ab11c
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. No scripts were extracted, but the presence of embedded URLs and the overall detection profile suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/strik?utm_term=best+listening+skills+exercises PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393515/normal_5feda2084c717.pdfIn PDF document text
    • http://bixifofagowezi.22web.org/wow_shaman_guide_leveling.pdfIn PDF document text
    • https://cdn.sqhk.co/sadirorig/Qiame59/run_2_unblocked_games_76.pdfIn PDF document text
    • https://cdn.sqhk.co/pixorikibam/aJgihaC/zisositixasumulugu.pdfIn PDF document text
    • https://cdn.sqhk.co/jefapukawore/tEVoieI/free_code_text_editor_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/xemuxebu/geOhhhj/parkour_gone_bad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461770/normal_60130fde9c186.pdfIn PDF document text
    • https://cdn.sqhk.co/xokebuzizo/gojbia2/29915322046.pdfIn PDF document text
    • https://cdn.sqhk.co/xugosovemi/IjiTYie/dope_wallpapers_hd_4k_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/vakenuda/mjbyidA/red_ball_garage_nyc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489061/normal_5fd7f7e506502.pdfIn PDF document text
    • https://cdn.sqhk.co/vizoxaxijojo/hahcjVF/armajet_tren_pc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zunewidimem/edelweiss_sound_of_music_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/krishna_bhajan_ringtone_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/palm_beach_county_docket_report_search.pdfIn PDF document text
    • http://ronirito.rf.gd/video_calling_app_for_windows_10.pdfIn PDF document text
    • http://magajavopisili.epizy.com/allama_iqbal_open_university_tutor_information_2018.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF57 4616 bytes
SHA-256: 2d989eef2b3e3230f14f772d79caf0a0b7c0b9b75fc4b3075b7edc80cedaa44c
font_01_sfnt_off0000ef16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF16 11040 bytes
SHA-256: 68644f10e2fb35eb5b8a79ffa067076062d94d659fa596ebc4be89feea0438f7
font_02_sfnt_off000114a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114A0 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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