Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdd300d17816c36a…

MALICIOUS

PDF

77.4 KB Created: 2021-03-15 09:11:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: b73c2cc023e5ac921693c931414a7e20 SHA-1: ef696cf93c8722477d1102f24668181440808a22 SHA-256: bdd300d17816c36a57e45a121469c5f2f1c33e90beb43f209ec88b7fe6f49db5
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search engine result, aiming to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. The document body, though partially corrupted, contains text related to Disney reservations, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://jumiwimov.ru/strik?utm_term=when+can+i+make+disney+reservations+for+2021 PDF link annotation
    • http://covid-19online.site/cache_memory_mappingf4fu4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389586/normal_6002d3881da30.pdfIn PDF document text
    • https://cdn.sqhk.co/belexewuwif/hzjchjM/senior_web_designer_salary_australia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384634/normal_5fcd71ac49775.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379032/normal_5fe29c0f35941.pdfIn PDF document text
    • http://merovew.xyz/popcap_games_collection_free_downloadnrwwd.pdfIn PDF document text
    • https://cdn.sqhk.co/wagomito/FjTqhgm/lakeje.pdfIn PDF document text
    • https://cdn.sqhk.co/gavonenegave/c37a1ii/small_baby_boy_skins_for_minecraft_pe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495839/normal_6025c5e4a128e.pdfIn PDF document text
    • https://cdn.sqhk.co/bugininaxi/Uijjijh/my_mp4_movies_online.pdfIn PDF document text
    • https://cdn.sqhk.co/fupupusamun/djcggtX/ualberta_calendar_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489407/normal_601b374fd75d9.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/b451c681-452a-4237-b623-f0342edaf388/whats_a_cute_name_for_a_pet_rock.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/kubisazekoxuwabujuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89e08488-28d9-45c8-827a-0406672d938a/what_is_the_purpose_of_a_choke_on_an_engine.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/calendar_templates_2018_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/35164997670.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/digestion_absorcion_y_transporte_de_lipidos.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/divax.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/dezesife.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7dc823f-6cd1-48ea-9cb2-8ad6dd2f9449/suvodovirogiri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb388888-64c4-427d-9d37-dc804076043f/networking_interview_questions_and_answers_for_freshers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1fb243d-6754-48f5-8ff4-324cc11f2026/where_can_i_travel_abroad_this_christmas.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/36570251154.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/panunixulojagabezotukiko.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/dupegewozuxopunorimulelo.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_off0000ef00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF00 5796 bytes
SHA-256: 07c043d3c5665b5c0c0b1cfba2e8125738723c7249ba53b758b40224a024f1e1
font_01_sfnt_off000102a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A7 10896 bytes
SHA-256: b2be6e20f0f9395acc12fdbdefd9108088d74d9888bd08b3a0cd298a47fb0ac4

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