Malicious PDF — malware analysis report

Static analysis result for SHA-256 df16cf40901aa0a4…

MALICIOUS

PDF

70.7 KB Created: 2021-03-09 11:29:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: d8876cee69d91e05741ece201ff52737 SHA-1: e6406619b8a99230bfaef9a80d7d60de06d879d8 SHA-256: df16cf40901aa0a4aed99b6fa324998cf88eb8b873721c8237544b2df12fa8d9
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified as a phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/123?utm_term=accu+chek+guide+lancets PDF link annotation
    • https://cdn.sqhk.co/lerapuraroke/SjdGbhg/best_offline_open_world_games_for_android_2019.pdfIn PDF document text
    • http://joritukuw.iblogger.org/33415940854.pdfIn PDF document text
    • http://beautytopshop.site/can_i_replace_honeywell_thermostat_with_nestu7jle.pdfIn PDF document text
    • http://usechambre.xyz/how_to_clean_speed_queen_top_load_washer0nj1v.pdfIn PDF document text
    • https://cdn.sqhk.co/bafesugoguwi/iiijggj/president_museveni_s_last_speech_on_covid_19.pdfIn PDF document text
    • https://cdn.sqhk.co/jebixusugak/qgigdjd/noob_vs_pro_vs_hacker_vs_god_godzilla.pdfIn PDF document text
    • http://nubolats.xyz/ley_notarial_de_puerto_rico_2019mjjc3.pdfIn PDF document text
    • https://cdn.sqhk.co/rorajakura/frP87Vu/twitter_video_download_shortcut_ios.pdfIn PDF document text
    • http://odemebayisitrafik.com/e_balagurusamy_data_structures_using_c_downloadbjmjp.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://uploads.strikinglycdn.com/files/16213b0c-9511-47e4-9ae5-91a6d2f9672e/kafiwag.pdfIn PDF document text
    • http://wasamatebupo.rf.gd/68092003793.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42e86e98-7fac-4338-9979-d12247dc39db/lista_de_los_derechos_humanos_universales.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/11147839258.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/xupumumejiwuwonomi.pdfIn PDF document text
    • http://seguwogira.rf.gd/antiemetic_pharmacology.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/48817002.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/gafinadowizafela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2c38089-bc12-4726-b850-e141ccc061a8/the_vampire_diaries_books_barnes_and_noble.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/dynasty_episode_guide_season_8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8a8edae-32d5-4dc9-9ea2-f8eeee4e6ec6/pharmacotherapy_handbook_10th_edition_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceb2b2b2-63c9-4481-bc2a-fc0ee6605ef7/krups_egg_cooker_measuring_cup.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/quiq_battery_charger_lights.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/64722176771.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_off0000cb8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB8D 4932 bytes
SHA-256: 3006d406a41275599897077e1574471cb1ad416d9bf33a8f43b225a1eb8c8350
font_01_sfnt_off0000dc42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC42 10428 bytes
SHA-256: 7436753e952348f09f2243b45ef29b39fb0e09734d5f25987826a69d479b1bf8
font_02_sfnt_off0000ff9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9A 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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