Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b160534faa73cdc…

MALICIOUS

PDF

89.0 KB Created: 2021-04-01 10:51:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 020d823b631bae4020e3b8429c4fa010 SHA-1: c14aea19318badb9f8502d20db920cadf8881f60 SHA-256: 7b160534faa73cdc8d7d1276b13f24f91edfaa7b1e409a650463e076a52e7a5a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, appears to be a lure related to video editing software, likely intended to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://leonvi.ru/123?utm_term=best+video+editor+for+android+without+watermark PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424630/normal_60629f9bc3782.pdfIn PDF document text
    • https://cdn.sqhk.co/bafaluminowi/sYhfAP2/16984156684.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447460/normal_6038c47574abe.pdfIn PDF document text
    • https://cdn.sqhk.co/xedufoga/5UVghji/nail_and_spa_in_the_mall.pdfIn PDF document text
    • https://cdn.sqhk.co/lewulula/Nzwhbhc/12932480925.pdfIn PDF document text
    • https://cdn.sqhk.co/jagibuvat/Ftgdgdq/switzerland_u20_ice_hockey_team.pdfIn PDF document text
    • https://cdn.sqhk.co/miwiwefe/KjhXAje/linkedin_premium_background_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416918/normal_601f30dfb3f91.pdfIn PDF document text
    • https://cdn.sqhk.co/loxowopiv/5EqLyif/99395562584.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385415/normal_60099c1ba2942.pdfIn PDF document text
    • https://cdn.sqhk.co/dogutadova/sjche6L/46537422209.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • https://uploads.strikinglycdn.com/files/caa9416b-9b92-4211-aee8-8e4e40a53e84/bissell_pet_stain_eraser_powerbrush_portable_carpet_cleaner_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/563f52b6-b6e6-4ad5-ba7c-5a273634bd18/86665904919.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/padafokofenipa.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/bollywood_horror_old_movies_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/checklist_formato_excel_en_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/jajob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/689a7496-2144-42bf-8af8-260117a6f305/34747981795.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/bevuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19b5ee5c-d6f1-40e4-8bb5-391ef12cfe05/what_is_the_best_weight_lifting_routine_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/adobe_photoshop_cc_2018_free_softonic.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/casio_vibration_alarm_watch_green.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca0b0e40-3e7b-4b55-a449-39f04ab928e8/jixologufame.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
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000109cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109CF 5380 bytes
SHA-256: 1af28bad176765d740c85cc0ef3be8814f2d556d7ae7097e30045e2662bd20dc
font_01_sfnt_off00011c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C0A 9416 bytes
SHA-256: 6b0ae9d4ceb6e4bea2cb6ba664dcf5c96479abc70b8b42a08d76f8be23a6fd99
font_02_sfnt_off00012f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F2E 11448 bytes
SHA-256: 84804597e466129046fb31fb398cdd1f1fab8f5f2ba7c0b5470419d4a9ad1530

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