Malicious PDF — malware analysis report

Static analysis result for SHA-256 c618b2baf64c9bdc…

MALICIOUS

PDF

70.3 KB Created: 2021-02-18 05:41:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 00dcc9bbfb543ee366f3da812215d442 SHA-1: 9c884dc4ce6edd63a8cffb8f6405239151e8ca9f SHA-256: c618b2baf64c9bdcf6f8feb612bf5bf7f54b22df5644f42327d215f9529803bc
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/aws?utm_term=twilight+2008+movie+download+in+hindi+720p PDF link annotation
    • https://zoxusikajikad.weebly.com/uploads/1/3/4/8/134851315/famewawuvitib.pdfIn PDF document text
    • http://busibear.com/zunepefuraq1t8m.pdfIn PDF document text
    • http://ryukzak.digital/la_carta_a_garcia_completa1j2ig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460680/normal_5fe6a54f5e34b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382197/normal_5feaf1282ca42.pdfIn PDF document text
    • http://gufutaca1.xyz/kyle_dion_hold_on_to_mekarlo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375352/normal_60082963097e8.pdfIn PDF document text
    • http://nibelv.xyz/sheet_music_writing_program_online59ye6.pdfIn PDF document text
    • http://bazis-rostov.com/58468842850xgk0e.pdfIn PDF document text
    • https://rixowumunek.weebly.com/uploads/1/3/5/3/135330445/3543132.pdfIn PDF document text
    • https://wuxinuwizon.weebly.com/uploads/1/3/0/7/130776673/pikovowomapapu-wizowunixusu.pdfIn PDF document text
    • https://saxeguwub.weebly.com/uploads/1/3/1/4/131406831/23794d1313.pdfIn PDF document text
    • https://fejiwapofiji.weebly.com/uploads/1/3/4/6/134699364/c72d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476301/normal_60130a801fba2.pdfIn PDF document text
    • http://pogadai.xyz/bomejufipotimet43lmx.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_off0000d4a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A1 5748 bytes
SHA-256: 9ab1259825aa3a89cda01476a1fe2bfd914bc1b6c618d8d8b4685232d8414326
font_01_sfnt_off0000e830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE830 10496 bytes
SHA-256: 1953bb4d7a5162005543f985665d34f92102d2b3b09790a6f857da26ae7ce573

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