Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcfd4cf597bc182d…

MALICIOUS

PDF

92.2 KB Created: 2021-06-07 02:21:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 7b5a7c1fc44c60afdaede81c76f5c0c8 SHA-1: e175b48202e80f2a2bb5427ce6438762674ae2a2 SHA-256: bcfd4cf597bc182dfdd70ac1719d0acd3d2bfb0fe0f2d22ffca43511bc445950
186 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many pointing to disposable hosting services, suggesting a link farm or phishing operation. The presence of a URL with a 'rainbow+six+siege+offline+campaign' term indicates a lure to attract users. While no scripts were extracted, the PDF structure and numerous external links strongly suggest malicious intent, likely for phishing or distributing further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://oniceh.ru/pbw?utm_term=rainbow+six+siege+offline+campaign PDF link annotation
    • https://tiposowa.weebly.com/uploads/1/3/1/1/131164246/e4ae0b49f09889e.pdfIn PDF document text
    • https://vewewiganivobob.weebly.com/uploads/1/3/4/8/134852084/5909427.pdfIn PDF document text
    • https://lijupumo.weebly.com/uploads/1/3/4/4/134496400/tezeburoborox.pdfIn PDF document text
    • https://nakosedamewa.weebly.com/uploads/1/3/4/6/134612328/venuzotem_wasojagi.pdfIn PDF document text
    • https://milelujip.weebly.com/uploads/1/3/4/8/134861654/1206993.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jizakatum.pbworks.com/w/file/fetch/144507258/99199400981.pdfIn PDF document text
    • http://lebamojopa.pbworks.com/f/65126847556.pdfIn PDF document text
    • http://xewubamefa.pbworks.com/f/google_drive_pitch_perfect_2_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc864446-e8c9-4984-933a-59319b956dba/metodologia_de_la_investigacion_juridica_jose_carrillo_mayorga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eda62e8-af3d-4840-b4c9-1c52e2add4d8/62000821467.pdfIn PDF document text
    • http://wikitaxif.pbworks.com/f/majogomejigasajasaven.pdfIn PDF document text
    • http://pefagisunel.pbworks.com/w/file/fetch/144756021/pejasevi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b24d37e-7300-4a52-abb9-e0ecfe4d1c79/zojoxofuki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/300a54e6-74dc-48d2-8d60-024d4c5dc68b/dimoxoluwajo.pdfIn PDF document text
    • http://fatakalewene.pbworks.com/w/file/fetch/144686322/download_keygen_coreldraw_graphics_suite_x4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baa0f5a8-212e-4ef2-81ee-499febd09652/why_digital_transformations_fail_audiobook.pdfIn PDF document text
    • http://tusoxefum.pbworks.com/w/file/fetch/144462069/how_to_put_joie_car_seat_on_pram.pdfIn PDF document text
    • http://fokopaviwu.pbworks.com/f/xogasug.pdfIn PDF document text
    • http://funesut.pbworks.com/f/sao_alicization_season_2_english_dub_release_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfb4755a-04f5-4fba-a61f-ce9f2dde09b0/73493806631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3078e735-8b10-4dce-be12-f1d53b59c833/how_to_fix_a_noisy_dehumidifier.pdfIn PDF document text
    • http://lijegazoz.pbworks.com/w/file/fetch/144585396/libros_sobre_ser_un_buen_lider.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87838782-8d9c-4d3d-b751-8d215dd1f848/form_4562_depreciation_and_amortization_worksheet_excel.pdfIn PDF document text
    • http://bavudexote.pbworks.com/w/file/fetch/144667746/actividades_de_pensamiento_matematico_en_preescolar_aspecto_numero.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_off0001280e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1280E 5544 bytes
SHA-256: f0b3c1ae29ecfe5c09d6525d28d723c7429d53b489a9277cd6a6dd619fbf987a
font_01_sfnt_off00013aff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AFF 11616 bytes
SHA-256: 467d6c4f8ab788b3bc24dd94ecd33c8d90842069e6bd54ede3a0001fec5f330a

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