Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc286ed68a812fa4…

MALICIOUS

PDF

80.6 KB Created: 2021-03-13 15:49:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 4a43585f616757ece526421a00ad3e00 SHA-1: cf0d173a7f77adbc5e81cfead192d6bde6decfc1 SHA-256: bc286ed68a812fa4afd56b1fb835e21fd4055e4462c13b223ff8ff3caa224f7e
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating an external URI and embedded URLs, with one prominent URL suggesting a phishing lure for free spreadsheet software. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a social engineering attack to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/123?utm_term=free+spreadsheet+software+for+macbook PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403819/normal_6041f1a2d6cdf.pdfIn PDF document text
    • http://tezoxefakalexo.sportsontheweb.net/how_to_factory_reset_samsung_air_conditioner.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415327/normal_6016ed7259780.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379241/normal_5ff4c6f869b86.pdfIn PDF document text
    • http://beduzevitugok.mypressonline.com/the_crown_netflix_cast_season_4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444369/normal_601d0510c1c52.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/e2f033c1-d99a-4898-9acd-f5fe7e6d36cc/61065193945.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e1afb7e-cc46-4bee-9305-0fd8dba770a7/percy_jackson_and_the_sea_of_monsters_summary_shmoop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b25de271-7398-4451-b2c6-4bbfca830b18/zokabujiketijuxebisop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc15674f-fc44-4ace-a998-1c9eff0486c0/google_maps_street_view_not_working_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0572ae84-858d-4c28-9848-7614e186bb7b/how_to_get_hp_printer_to_print_in_black_only.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/spartan_sewing_machine_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/870bebb3-5d1f-43a5-a94f-8e77a3d278e6/tepuzabudumijetofapu.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/free_gift_certificate_template_no.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9929bf9-b27c-4fbc-8622-6fd3b31f3d81/stand_by_me_song_cover_versions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ecd5446-fce0-44ea-9f2b-d0b45adda322/do_simple_covalent_bonds_dissolve_in_water.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/tidazapuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbc88419-cd76-4e8d-a654-2c6b719f2808/retanotugoxebavupe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dc3f98a-dccd-42f4-927b-3ba3254684c6/1496775948.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfcd7662-58fe-4a67-9def-fb7305c0bc18/weber_spirit_grill_cover_e210.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de0a0024-131b-4bcc-bc27-2ab996cf0bcf/62194456663.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/002557f5-2799-42f4-aebb-de59e808fbe4/how_to_program_ge_heavy_duty_digital_timer.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_off0000fcb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB1 5616 bytes
SHA-256: 09d0bd431d034cf05a6e4a01deacca1bb33511ffd8089d7575ef339c94d7af1b
font_01_sfnt_off00010fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB2 10952 bytes
SHA-256: b31518074a4bc2c257da92912ba3572b9499bea59b06fdc52f0309b9f49fb6ac

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