Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff6ea0f9f4da2e52…

MALICIOUS

PDF

70.4 KB Created: 2021-02-07 09:39:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 068f8eb48efd7b644012493cbec11416 SHA-1: cb4282732d6d806d073e468ba95c4610dc9df7bc SHA-256: ff6ea0f9f4da2e52898a0d8f15e7a677bb83b91f64c0fad6c0bd1b8be3f4484a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wb?keyword=alsea%20river%20salmon%20fishing%20report PDF link annotation
    • https://suzeziji.weebly.com/uploads/1/3/0/7/130739492/a61a5.pdfIn PDF document text
    • https://dujakoxuk.weebly.com/uploads/1/3/1/4/131483447/871790.pdfIn PDF document text
    • https://cdn.sqhk.co/xivovido/ihgRfjj/fexilamutazupimi.pdfIn PDF document text
    • https://muwikilakejo.weebly.com/uploads/1/3/4/5/134519857/bovuxepu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378383/normal_600ae96a77d37.pdfIn PDF document text
    • https://zopiwaseka.weebly.com/uploads/1/3/0/9/130969839/2552690.pdfIn PDF document text
    • http://help-bluebadgecustomer.com/fomekawepexvmw.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/1givFrq/50397080707.pdfIn PDF document text
    • https://cdn.sqhk.co/salobosemiv/iiibjjk/barexese.pdfIn PDF document text
    • http://reduslim-official.website/christmas_quilt_runner_patternsxx9wo.pdfIn PDF document text
    • https://vezitiratad.weebly.com/uploads/1/3/1/8/131856143/dusizusewosefelop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475988/normal_5ff32ff81d1dc.pdfIn PDF document text
    • http://electorat.org/ambiano_pressure_cooker_96775_manualwbqxy.pdfIn PDF document text
    • https://cdn.sqhk.co/datimemovuko/CBsFoij/paint_drop_game.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/QjeH4ji/furia_de_titas_1981_filme_completo_dublado_online.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_off0000d536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD536 5364 bytes
SHA-256: 8c4e5c612f33f94a68ffecc24aeec46a8a9859ca32e96147279577eeb1014b41
font_01_sfnt_off0000e758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE758 10468 bytes
SHA-256: 44abcd6c9e0d516cb91ad31c04964b70ddd4dd83528d22f2be914c1e97d007a9