Malicious PDF — malware analysis report

Static analysis result for SHA-256 d530e876a469ec2b…

MALICIOUS

PDF

263.4 KB Created: 2021-04-15 05:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 09bd2ccc0014b9a200a28db4fd2a9c8e SHA-1: 849abc393eeb6280d7a40a38275a7a9e3684dac2 SHA-256: d530e876a469ec2b9d4bc9570e848202d8e284f06730dbc7a896857c3ed639ae
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document's content is designed to trick users into installing a fake browser update or extension. The embedded URL 'https://maypoin.ru/strik?utm_term=philosophy+of+science+journal+abbreviations' is likely the malicious link used in this social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9894

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://maypoin.ru/strik?utm_term=philosophy+of+science+journal+abbreviations PDF link annotation
    • http://justiciaforjustice.com/xujizelimexapusen4l7bi.pdfIn PDF document text
    • https://cdn.sqhk.co/kujexelorite/idiangf/core_x_studio_greensboro_nc.pdfIn PDF document text
    • http://goproonly.com/70921992661mubr2.pdfIn PDF document text
    • http://zefunafujazi.22web.org/numbers_in_english_and_spanish.pdfIn PDF document text
    • http://repair-telefonov.ru/carbon_monoxide_material_safety_data_sheet8j773.pdfIn PDF document text
    • http://ravuwetob.iblogger.org/brahms_ein_deutsches_requiem.pdfIn PDF document text
    • http://love-cosmetics.shop/17087362997b4sr9.pdfIn PDF document text
    • https://cdn.sqhk.co/dogojaseziwo/Pjedgja/lafupo.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/eWHjdhh/hachi_sushi_regina_menu.pdfIn PDF document text
    • http://vivaxuza.iblogger.org/79251297053.pdfIn PDF document text
    • https://cdn.sqhk.co/guwewaxa/PjeKgin/95193241370.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/bd050883-5400-4d08-a7e2-0fdf606d0499/90602120489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/270d2cfa-61f6-454f-8ae8-d1688bbb2a3c/excel_vba_loop_through_two_ranges.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/how_to_reset_a_shark_watch.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/the_trials_of_apollo_paperback_set.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/chrome_latest_update.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d7a595d-2928-4e4e-bfeb-33be4a1575df/bafumutusemilosezumosig.pdfIn PDF document text
    • http://sunuwib.epizy.com/bloodstained_100_map_guide.pdfIn PDF document text
    • http://tidewoxawutose.epizy.com/londonnet_cinema_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/regomase.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/garfield_cat_full_movie_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/29594763953.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b53af3f7-e806-47be-abe3-1cc0be3c0c4b/the_fallout_series.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/lojujagonavixij.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/rhetorical_analysis_of_patrick_henrys_speech_to_the_virginia_convention.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dfddca8-158e-4df3-b994-554aa1d59d4f/what_does_patient_autonomy_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/lepobazipuwojalonu.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_off0003d483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D483 5484 bytes
SHA-256: 0b2eff9ff1325a02bf5fe9148c36fb37f9445c5925989915a9b9360d0462486e
font_01_sfnt_off0003e736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E736 12184 bytes
SHA-256: ee7bd1e883c0e45702b6c01403f338739546bc16490f130a1f9f4f38e2f072de

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