Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3204d490098129c…

MALICIOUS

PDF

83.0 KB Created: 2021-03-29 23:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f005f6d2a31361416b7a5241d836060 SHA-1: af30a59df709c8b72e680c42a828d4b95a0d4172 SHA-256: d3204d490098129c7c7c691c94b8c25bc5f2eff7eee5dd06c9e7230f7115cc23
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though partially corrupted, suggests a lure related to 'learning python by building games'.

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://druttle.ru/aws?utm_term=learning+python+by+building+games
    • https://cdn-cms.f-static.net/uploads/4448976/normal_60122129d0e06.pdf
    • https://cdn-cms.f-static.net/uploads/4461791/normal_5fdaa93153f1c.pdf
    • https://cdn-cms.f-static.net/uploads/4413370/normal_604b3f555109a.pdf
    • https://static.s123-cdn-static.com/uploads/4385612/normal_5fc6837e242a1.pdf
    • http://lotibamuzuti.scienceontheweb.net/tipos_de_sistemas_de_informacin_geogrfica.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/92299f6a-902f-4c59-ad4d-a0153b4b23f1/the_first_amendment_of_the_constitution_of_the_united_states_of_america.pdf
    • https://uploads.strikinglycdn.com/files/d3177414-366e-4a5e-bac6-e35c881ea2e7/banovujegepepa.pdf
    • https://uploads.strikinglycdn.com/files/62b32820-f536-44ce-aba9-294bb9e5e1ed/boroguzibusabok.pdf
    • https://uploads.strikinglycdn.com/files/637fffb8-e6dc-4942-bf4c-76b2047bf013/how_to_connect_xfinity_xr2_remote_to_samsung_tv.pdf
    • https://uploads.strikinglycdn.com/files/b6f2fe8b-ef17-402d-8746-14f0c00a016f/26890369412.pdf
    • https://uploads.strikinglycdn.com/files/6b6525bf-b068-4259-9dac-964ddc6cb545/fojarirufijamexeriwizo.pdf
    • http://nisetekotixob.myartsonline.com/9793674439.pdf
    • https://uploads.strikinglycdn.com/files/199bce4b-dee2-41c1-84ed-c44a5f15559a/96795057151.pdf
    • https://uploads.strikinglycdn.com/files/995022ec-5aa8-4ae7-8334-1fbce98c3113/boy_scout_merit_badge_books_download.pdf
    • https://uploads.strikinglycdn.com/files/21ffa45d-521e-4775-a97d-1c74fea7cba5/howls_moving_castle_book_three.pdf
    • https://uploads.strikinglycdn.com/files/67d9ed2b-0ff1-4c38-8ae9-f8743cc9da82/nelelopureniwe.pdf
    • https://uploads.strikinglycdn.com/files/f7098cfc-77bd-4102-b833-467fa73cf1b7/adding_and_subtracting_decimals_vertical_worksheets.pdf
    • http://pabotojixupi.atwebpages.com/tebefunuzex.pdf
    • https://uploads.strikinglycdn.com/files/e16f4df2-7418-48fe-a58a-dbcf3253dc25/ielts_cambridge_9_listening_test_4_answers.pdf
    • https://uploads.strikinglycdn.com/files/f576f098-61c6-488f-a25a-0ee91df97689/promo_codes_for_dunkin_donuts_december_2020.pdf
    • https://uploads.strikinglycdn.com/files/ba6a8df7-9b9c-4115-8fdc-67eaa1cbb38d/sequence_text_structure_examples.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104f8.bin
418c654d05f732f6978b7603405968d84f1a5efb8989832c0b8a92497f8ac16e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104F8 5556 bytes
font_01_sfnt_off000117b3.bin
cff85093f6ca4f9034afb936d69dc516eb76af00b5ffcb868331025edcc4b233		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117B3 11512 bytes

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