Malicious PDF — malware analysis report

Static analysis result for SHA-256 944e9515938d02bb…

MALICIOUS

PDF

79.3 KB Created: 2021-03-06 01:20:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c5a7a6d7842633f554ed2f3e769d7805 SHA-1: dc0f1ab11f0e54e43a5aaeaeedbe82d98e4efa51 SHA-256: 944e9515938d02bb5d47c0b12dafd065ec403a96a1ef69a4e66c24a2ad0d9e0a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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://golowaki.ru/award?keyword=s10+v8+conversion+kit+4wd PDF link annotation
    • http://zexaribamemavi.sportsontheweb.net/batogasijizelako.pdfIn PDF document text
    • http://kesuvajeb.scienceontheweb.net/flight_of_the_bumblebee_sheet_music_clarinet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465015/normal_6015c63192be0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479451/normal_6039ebfeec704.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392444/normal_5ff62a88e17c4.pdfIn PDF document text
    • http://jidokove.scienceontheweb.net/90480464610.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
    • https://uploads.strikinglycdn.com/files/bf110344-9cf5-4ad9-8600-7e71811e0668/47315790279.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffc62842-73f4-4cd5-a1ca-56a8b3d233e8/51311220528.pdfIn PDF document text
    • https://6478d21b-237c-41b5-add8-96d7b9819624.filesusr.com/ugd/c7ef1a_8b967421f22d4dbba19196eabc0c20b3.pdf?index=trueIn PDF document text
    • https://274e0329-8a83-4376-85d1-fe7e07dbc583.filesusr.com/ugd/a86d68_28e2013465664d67ae05ff37ad60d152.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d370c19-0b78-45a7-8fdf-de24698065dc/what_are_the_different_curriculum_design_models.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/mueller_report.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/cheapest_android_phone_philippines_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/online_text_editor_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/696c7c5b-3c19-474a-8cea-5243cd6f9c06/brother_dream_machine_2_bobbin_size.pdfIn PDF document text
    • https://8dcf3d85-40eb-4350-b789-ae6ac2c46e24.filesusr.com/ugd/21d17a_29991c301ae648d798a57c535d4d633b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/banco_de_venezuela_pago_movil_apk.pdfIn PDF document text
    • https://56f9ebfc-1b58-4ccd-90b9-24793863e956.filesusr.com/ugd/0f3536_ab727ec66cd1470b8da4c392eef75c66.pdf?index=trueIn PDF document text
    • https://30b7a97f-6117-4fff-8876-4b3c2220b6c6.filesusr.com/ugd/15cd4d_ecbe6e56a06e497b838023df8fe46c20.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bagisi/nothing_holding_me_back_video.pdfIn PDF document text
    • http://zaduzos.myartsonline.com/what_are_the_levels_of_reading_plus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1d1e5a1-3029-48c2-b0f3-6ddbe4c7d98a/how_do_i_charge_my_apc_backup_battery.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_off0000ec90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC90 5272 bytes
SHA-256: e542e84cd9e8372cd811519df374161010e99ef1e2c8d54407ae7ab9f197de92
font_01_sfnt_off0000fea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA0 10156 bytes
SHA-256: b449fcbda655f70db91e397e5fc0690585a74ac83643c2ef218a297fb881f54c
font_02_sfnt_off00012162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12162 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3