Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b3633e6258c620a…

MALICIOUS

PDF

83.6 KB Created: 2021-03-10 15:36:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 15faf7d028d629e129be29ecf9f88b86 SHA-1: ced4a64ed7fafa6c986110dfa40f62e42c799505 SHA-256: 2b3633e6258c620a76fd781094bbd0a7a51f57750a6f2b28f587baac8e1134f8
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 URI pointing to a suspicious domain, which is a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though truncated and obfuscated, contains references to "clumsy ninja hack apk" and the authoring application, suggesting a lure to download potentially unwanted software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/123?utm_term=clumsy+ninja+hack+apk PDF link annotation
    • https://magizixulu.weebly.com/uploads/1/3/0/7/130776273/eceee31.pdfIn PDF document text
    • http://bu-markett.com/official_summer_sport_of_canada_codycross57psy.pdfIn PDF document text
    • http://clubstore.info/diversity_and_inclusion_personal_statement_example8akil.pdfIn PDF document text
    • http://idealslimitaly-ufficiale.site/25444376856cb9gc.pdfIn PDF document text
    • http://armlur.space/how_to_put_chain_back_on_poulan_chainsawxm6lv.pdfIn PDF document text
    • https://fadefewili.weebly.com/uploads/1/3/4/3/134316521/6231865.pdfIn PDF document text
    • http://lifeit.pro/ge_adora_microwave_reviews2fo10.pdfIn PDF document text
    • https://xefapakofaguwa.weebly.com/uploads/1/3/1/1/131164324/jimajibijaven.pdfIn PDF document text
    • https://fizabogozof.weebly.com/uploads/1/3/2/8/132815807/somopamimaxeve.pdfIn PDF document text
    • https://borotopod.weebly.com/uploads/1/3/3/9/133997632/5894189.pdfIn PDF document text
    • http://gromstroy.com/bosch_avantixx_washer_dryer_manual1zz3t.pdfIn PDF document text
    • http://creamwalls.online/gedutepokesexippytap.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/jawusawar/airtel_money_transfer_app_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec8cde33-46fe-419b-8442-e31dc4b623b4/xagimurubegoxelatudok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b4f677a-8136-4b09-a3ad-5778307169bc/liludaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/529b7d87-87a1-4eef-90d3-a84141cbfbd8/cen_tech_battery_charger_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/cash_voucher_format_images.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/canon_pixma_mp250_driver_free_download_for_windows_7_64_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e986f79a-e4f6-48f4-aba4-817b0cb39278/what_kind_of_intermolecular_forces_are_present_in_ch2o.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/good_night_song_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/microsoft_access_2013_free_for_android.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_off0000f6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B5 4916 bytes
SHA-256: ecf95615ce67247facdc6f82917901b87048824b560239df76ad2011106a8a52
font_01_sfnt_off0001073f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1073F 15084 bytes
SHA-256: 98be48b2500f359fd3c677d4866dcee2bf4ba8957bacfb3ca79bc7c48a59b8c5
font_02_sfnt_off0001327a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1327A 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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