Malicious PDF — malware analysis report

Static analysis result for SHA-256 f66ebce1467c9f7d…

MALICIOUS

PDF

72.4 KB Created: 2021-02-18 04:00:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 909c7623b1ae4f5f630283633d065888 SHA-1: f5118dc00896de6e870deb0f83d48c0e9f4c14da SHA-256: f66ebce1467c9f7d137cf89262d58ff75ed4c129bac3fd0602326a2a0644d1c4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/wix?keyword=trane+thermostat+manual+tcont802as32daa PDF link annotation
    • http://gratoraama.space/dj_baby_shark_remixbegw2.pdfIn PDF document text
    • http://saudiautoinsurance.com/zufexefofixebenikudapadzlvc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460946/normal_600b8ef5a6934.pdfIn PDF document text
    • http://wtia.space/mouse_guard_comic_ordercg0h4.pdfIn PDF document text
    • http://reduslim-ufficiale.website/manual_do_drone_e58_em_portugus46mh2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367950/normal_5fc7f24c15f63.pdfIn PDF document text
    • https://rubexanow.weebly.com/uploads/1/3/5/3/135346757/40cc0cc98c3b1.pdfIn PDF document text
    • https://ritajixudigozik.weebly.com/uploads/1/3/5/3/135345652/sawaweguliporit.pdfIn PDF document text
    • https://pagafika.weebly.com/uploads/1/3/5/3/135339488/vowokigoxovemuj-gasotelot-sevodajil-tizubesosidiwux.pdfIn PDF document text
    • https://totamozosapopa.weebly.com/uploads/1/3/4/7/134712517/melokanugaw.pdfIn PDF document text
    • https://tejisapaw.weebly.com/uploads/1/3/1/1/131163851/ae9ccda412cf7c.pdfIn PDF document text
    • http://stnold.com/libro_de_periodoncia_carranza_11_edicionadzcg.pdfIn PDF document text
    • https://mabatuba.weebly.com/uploads/1/3/5/3/135303696/wedize_xirijira_belowu.pdfIn PDF document text
    • https://vopesowe.weebly.com/uploads/1/3/4/6/134638419/2175520.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8DC 5760 bytes
SHA-256: 1dced1772431a2e9a6da9dedae8a613d58c1f498ea22a53490feb372d8c8d7f4
font_01_sfnt_off0000ec42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC42 12752 bytes
SHA-256: 11724f13276e2aa1a8ff6030b5b03c33338e40b4fabef208250e1ffb29cc5e87