Malicious PDF — malware analysis report

Static analysis result for SHA-256 427dadbda5a33519…

MALICIOUS

PDF

75.1 KB Created: 2021-05-01 06:45:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9f4068541021bb86f98aa04c1f6f9510 SHA-1: b46c00a13cd9b5030b915a1dac21d70985aaf522 SHA-256: 427dadbda5a33519805466c603f30a2219f7bc3de0c4b84dba4161c723bcb4b0
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure related to weight loss and embeds a URL that points to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a harmful site.

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://midufefew.ru/strik?utm_term=do+you+lose+weight+faster+on+keto PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387939/normal_5fe1041b99ee4.pdfIn PDF document text
    • https://cdn.sqhk.co/genonitag/iIdgjii/11350287734.pdfIn PDF document text
    • https://cdn.sqhk.co/dasupejej/hhkjiFD/a_name_whatsapp_status_video_mirchistatus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369763/normal_601951b51a22a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497646/normal_6062c36a56c07.pdfIn PDF document text
    • https://cdn.sqhk.co/gowamojon/JlPseje/kmart_sheet_sets_king.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/j2IBAjf/boat_wallpaper_for_mobile_lock_screen.pdfIn PDF document text
    • https://cdn.sqhk.co/wofikubid/WGjdHG8/lojowopumiboj.pdfIn PDF document text
    • https://cdn.sqhk.co/tigufarejeti/ifgcdji/sports_car_racing_usa.pdfIn PDF document text
    • https://cdn.sqhk.co/buwaxaxodi/ie83jcC/mini_block_craft_2020_craftsman_games.pdfIn PDF document text
    • https://cdn.sqhk.co/lukuvekeliki/jeMjgN0/29338708501.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377912/normal_60565a719cbc1.pdfIn PDF document text
    • https://cdn.sqhk.co/xudekutof/h2Pjdm8/kingdom_builders_church_international_beasley_lane_charlotte_nc.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/c095f8fb-28ca-4916-9e3c-5be0f0dde898/crockpot_express_cook_chicken_breast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eeee9be-60cc-49f1-9762-54e68fac0551/how_to_reset_smart_life_socket.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/39775091388.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/jasenitefenujuj.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/dusuluga.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e87d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87D 5288 bytes
SHA-256: 1827353ba7864b7d7e0af754963fd8eacfee28c156d00919274d2b41283caa6b
font_01_sfnt_off0000fa99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA99 10720 bytes
SHA-256: 5f51a06b0876f57b2c736bc58f7c80805709257a77715a08bd50f35832d3e1e3

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