Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f203868afeeeed1…

MALICIOUS

PDF

76.4 KB Created: 2021-05-11 21:16:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5bf3976afbc38d8404caabd43ce363a3 SHA-1: 78add3b3ae7448d41acb41da6146247ab7e4dc7a SHA-256: 8f203868afeeeed13aaf44d03d07437f0d9a63479b0fb1911ef1a118246efd22
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a URL that appears to be a lure for downloading game-related content, likely a phishing or malware distribution attempt. No scripts were extracted, but the presence of an external URI suggests a download or redirection mechanism.

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://bologen.ru/strik?utm_term=farming+simulator+2015+ps3+mods PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460686/normal_5ffc829d6df11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481068/normal_60166e028233e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416506/normal_5fe0dc45a9c3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366407/normal_5fe4bc317684d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367290/normal_6059414ea2f3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500444/normal_604aeca140f07.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/27adcf9f-b555-4c3c-bd65-695ce0fd7df6/dirt_devil_power_max_belt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0c8558f-cb94-46ea-b192-246e4399a097/74966777376.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/659fcd3b-37c3-4d37-83b2-00e98d1c6f6a/how_do_i_reset_my_bosch_avantixx_washing_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bfc69d8-f329-4a88-b230-0e8a8be37c52/how_to_do_key_cavern_in_links_awakening.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fe87ad3-218d-44d6-8ea9-71ce8333d898/husky_1800_psi_pressure_washer_parts_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f90a42b5-3f5a-467a-8fcf-a3b601f2a58c/minna_no_nihongo_1_audio_script.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56ea6e63-fd77-4cb3-9e1f-d6bf5048b7a2/pastor_yiye_avila_orando_en_el_espiritu.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/xojedibefito.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/contract_law_questions_and_answers_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08b20123-ca19-4ef6-8093-8a953cdd49a6/11397382969.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/sabadera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1addeb9-571b-4c5d-9926-3111a97b52ff/how_to_animate_on_an_ipad_pro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55b5bad0-a9ee-4d6b-98b4-83a0844db3c5/40608897529.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1518c37-d5e2-482f-90c9-2b6ae8cf64c2/challenge_war_of_the_worlds_2_cast_ages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83e19ac0-419d-4973-9fd8-920f82d95665/papase.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2C 5848 bytes
SHA-256: 3d6394b52bbf3f7bcbfe3cd6560f9b8a9e9c2dc991409c7fa5baea7c9cdfdd03
font_01_sfnt_off0000ff05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF05 10744 bytes
SHA-256: f77a7a56deb953c695641eefcf77d810eda6fb8d49fb83b29672788e7bd12937

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