Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0af39b3309c43ca…

MALICIOUS

PDF

65.8 KB Created: 2021-03-17 15:50:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 0d9e28bedb951dee337155ee6e171ef6 SHA-1: a3ad7841e77e9cc735f9f36f4b534a0c6a073f82 SHA-256: a0af39b3309c43ca58eac1341e95bf6ebb6f013e295bc415ea974f46a4f133a5
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://golowaki.ru/wix?keyword=five+nights+in+anime+3+apk', which is presented as a download link for a game. This suggests a phishing or malware distribution attempt, leveraging a lure to entice users to visit the malicious URL. No scripts were extracted, but the presence of external URIs and the overall malicious verdict strongly suggest an attack pattern involving social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/wix?keyword=five+nights+in+anime+3+apk PDF link annotation
    • http://otshelnik.net/department_of_state_florida_annual_reportz315g.pdfIn PDF document text
    • http://praktika-ingenieur.com/vibamibiizux2.pdfIn PDF document text
    • http://form-copyrightservices.com/worm_zone_game_hack_downloadlfplr.pdfIn PDF document text
    • http://zoomita.space/more_solubility_curve_reading_practice_answerske6v5.pdfIn PDF document text
    • http://trastqort.online/2000_jeep_grand_cherokee_limited_specsf6jpm.pdfIn PDF document text
    • http://sochi2026.com/how_long_to_fall_200_feetcxqu5.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/deaefb8b-70cc-43d3-823f-fca19778c24d/60728574476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66492a98-f453-47d5-8757-ef903ae3fcc9/que_representan_los_personajes_de_rebelion_en_la_granja.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/34983379860.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/5348713297.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/alwin_school_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/flyer_design_templates_for_food.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7501e909-e804-4ce1-bffb-29654f3cc321/roland_v-4ex_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85de6a14-caf0-47e3-b236-541c9272e3a6/vomupejut.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/zen_mind_beginner_s_mind_book.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/muscatine_county_sheriff_accident_reports.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e7e4272-1f32-426a-bbe8-dcc53a738eec/verbos_en_ingles_traducidos_al_espaol_y_su_pronunciacion.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/free_printable_generic_employment_application_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31b1d058-2ffb-433e-b9c4-05cb1212e831/xefuxijabawosima.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_off0000c29b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC29B 5348 bytes
SHA-256: 362d93668b18994485589c37610e2beb923e99c848262a2773ed3eb2cf344c60
font_01_sfnt_off0000d4ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BA 10572 bytes
SHA-256: 99e37bb3516cb07c80882338f544b9927dee950781c2a1ad345dd08b7618bc96

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