Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9258f8012541b9f…

MALICIOUS

PDF

77.8 KB Created: 2021-03-18 02:27:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 2fc15670d2407277c685eaa5521c9d91 SHA-1: 67c1c1049ea9670d085a51863aac2c6a203b46e1 SHA-256: c9258f8012541b9fd9d67814f3cb04a97b131880e33c528236c083abb6a5a86a
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The embedded URL points to a suspicious domain, likely intended to deliver a malicious payload or lead to a phishing page. Although no scripts were explicitly extracted, the PDF structure and the ML classifier's high confidence suggest malicious intent, possibly involving embedded JavaScript for exploitation.

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://kuzutuzo.ru/award?keyword=bourbaki+lie+groups+and+lie+algebras+chapters+1+3+pdf PDF link annotation
    • https://cdn.sqhk.co/jotepomi/eiiiayt/14403325271.pdfIn PDF document text
    • https://cdn.sqhk.co/bebumila/Bjdgd8j/pemerakir.pdfIn PDF document text
    • https://cdn.sqhk.co/bibikodazit/h11Cxjb/72131404382.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454424/normal_5fe6d5b06c94d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370268/normal_6017b4c7cb9e8.pdfIn PDF document text
    • http://trysol.xyz/wow_horde_mounts_guidel6t2z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463551/normal_5fe0ebfd6a315.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490364/normal_6001501bb9a2c.pdfIn PDF document text
    • https://cdn.sqhk.co/dafibuxoki/buK7ihc/13263404801.pdfIn PDF document text
    • https://cdn.sqhk.co/dedizajo/ehdNxhh/application_orange_money_pour_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/idKhfge/84092975310.pdfIn PDF document text
    • http://se-mrush.com/infinix_note_7_lite_price_in_pakistan_4gb_ram_64gb_romc8hyj.pdfIn PDF document text
    • https://cdn.sqhk.co/gebunemif/giDjehe/fitness_point_gym_una.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383915/normal_604cfde7895b0.pdfIn PDF document text
    • https://cdn.sqhk.co/tesigasefaxe/jKufJxW/reported_cases_of_zika_in_bali_2018.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419192/normal_5fe1f48cefda6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421611/normal_5ffa456041f71.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/b08a0670-bafd-445d-a32c-6e82c560a99f/79009130149.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3e24d94-cb0d-4c3a-bf2b-dd01853d72f9/is_dunkin_donuts_stock_a_good_buy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93d348ec-c0f3-4828-8813-10dbc84ff2e6/mansion_on_the_hill_lyrics_alabama_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b62fd23a-ad00-4221-80fb-455f4726e02c/is_darth_bane_the_most_powerful_sith.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_off0000e322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE322 5768 bytes
SHA-256: ed055f9cacc12576146a5f7ebfd0ab0a2ccb40955153979afaf8de543559bab8
font_01_sfnt_off0000f6be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BE 10708 bytes
SHA-256: 91ab9c7f78d1397586cae6023f72b962ff270eabca96832dcf64d3b5f79df662
font_02_sfnt_off00011b1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B1E 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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