Malicious PDF — malware analysis report

Static analysis result for SHA-256 2979ed2b7d91fd34…

MALICIOUS

PDF

73.0 KB Created: 2021-03-06 19:44:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3fce1dc340164bff31e2f957a168e912 SHA-1: 192859106bc2e8238beb21d4fdad20387fbc4597 SHA-256: 2979ed2b7d91fd3494655a41b94813697599060c6a74ae8b307b4cc58baf8914
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=unidad+3+leccion+1+test+answer+key PDF link annotation
    • https://cdn.sqhk.co/pixafosabow/ihbAQrq/71257426848.pdfIn PDF document text
    • http://omynutural.space/basketball_jersey_template_psddq0my.pdfIn PDF document text
    • http://zoomita.fun/how_to.use_a_safety_razorwjz12.pdfIn PDF document text
    • https://cdn.sqhk.co/wowasuperan/gTCxayt/evil_dead_full_movies_hd.pdfIn PDF document text
    • https://viriparerari.weebly.com/uploads/1/3/5/9/135978168/39c8e37bc5ebbb7.pdfIn PDF document text
    • https://tejifogigevavep.weebly.com/uploads/1/3/4/6/134675995/9660413.pdfIn PDF document text
    • http://fortuneo.biz/93915652110zto5d.pdfIn PDF document text
    • https://ladupizisegi.weebly.com/uploads/1/3/1/3/131380895/3786858.pdfIn PDF document text
    • http://vsspb.ru/84251372436isoui.pdfIn PDF document text
    • https://cdn.sqhk.co/gagowuname/aRcgha1/pimawemunifixewos.pdfIn PDF document text
    • https://poxawakepuk.weebly.com/uploads/1/3/1/6/131606289/molireboboj.pdfIn PDF document text
    • https://cdn.sqhk.co/wabogojo/jjP8ibi/project_rts_strategy_literacy.pdfIn PDF document text
    • http://luminar2-download.xyz/biomes_notesb8rfx.pdfIn PDF document text
    • https://cdn.sqhk.co/xupebasolaw/fTMDENa/imperson8_family_party_games.pdfIn PDF document text
    • https://cdn.sqhk.co/sawijewabob/i2i7Tij/gadeb.pdfIn PDF document text
    • https://cdn.sqhk.co/vitozogog/PJiagg6/nitro_drift._io_game.pdfIn PDF document text
    • https://giromazipudu.weebly.com/uploads/1/3/1/4/131453901/1493474.pdfIn PDF document text
    • https://cdn.sqhk.co/soxoxefumuv/jhdhdd6/50256747894.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://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_off0000d404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD404 5184 bytes
SHA-256: d6d4420653eede53a47cab05432d6e63e312c7405e3cdd3ddb23fa7ac5b151a1
font_01_sfnt_off0000e5c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C4 10272 bytes
SHA-256: d2b63adb59ce28de13901c2fc471b2dd0556fae7f5a43340eaf8a7941f11026a
font_02_sfnt_off000108bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108BC 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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