Malicious PDF — malware analysis report

Static analysis result for SHA-256 4828791f11ce3992…

MALICIOUS

PDF

72.7 KB Created: 2021-02-12 20:57:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1f473170002f7137ad94f3f02a2fd4b7 SHA-1: 9b50300b07c09fbd4343c6deb9cd898cc531eacc SHA-256: 4828791f11ce39922f69ca85bef0cd2c6db46e66524ea6b343225d34a6f820dd
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/wix?keyword=sonic+ringtone+download+iphone PDF link annotation
    • http://filemarker.store/edexcel_examiners_report_gcse_english_literaturektekh.pdfIn PDF document text
    • http://rollernefritmassage.xyz/ofis_ftz_board_reportgivx2.pdfIn PDF document text
    • http://netzamka.ru/minetest_vs_minecraft4d2vz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470231/normal_5ffc01bdba1d0.pdfIn PDF document text
    • https://cdn.sqhk.co/tuseliwi/hehh1wn/sexopojaxotabot.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/ijAhc3X/87674052878.pdfIn PDF document text
    • http://burrrhey.tech/897428069313alnm.pdfIn PDF document text
    • https://cdn.sqhk.co/wukikanas/hjigIUz/pefulutipifidavefobus.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/1gGjf3J/plane_tickets_to_texas_san_antonio.pdfIn PDF document text
    • https://cdn.sqhk.co/delobepaziw/i6omxfL/kukikijimepiji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://bamusob.rf.gd/o_que__agnosticismo.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/7352990901.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/antimicrobial_activity_of_honey.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/jemukomor.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/verifone_vx520_manual_reset.pdfIn PDF document text
    • http://jegovogetaferop.epizy.com/types_of_formal_letters_examples.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD354 5140 bytes
SHA-256: 8f7dd27b342e93b4769057ed695e8b87772ae7e9ca3386de93ae14a4c1286125
font_01_sfnt_off0000e4c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C2 10412 bytes
SHA-256: 0f0b2c06e96a4df8e043b5205e5f2a3758d6b7380f3a266301f2609e7c6d940c
font_02_sfnt_off000107ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107CE 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f