Malicious PDF — malware analysis report

Static analysis result for SHA-256 5abfec550859de8c…

MALICIOUS

PDF

71.3 KB Created: 2021-02-22 01:37:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7fd3277982a74f4c46056a6a97ef1cac SHA-1: 46d519e5a3ea0da01437ca4dc7f3914a95f5f0a0 SHA-256: 5abfec550859de8ca324517a51ad3580757684b198d103f2494f6580ed5caf0f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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=cpm+chapter+4+answers+algebra+2 PDF link annotation
    • https://karinerojefemof.weebly.com/uploads/1/3/0/7/130775135/d6f187179cab.pdfIn PDF document text
    • http://skywonder.space/chiringuito_blue_bar_formenteraormrq.pdfIn PDF document text
    • https://cdn.sqhk.co/dinigivo/cJbxcJp/4252080813.pdfIn PDF document text
    • https://zatitudebijozi.weebly.com/uploads/1/3/4/4/134460539/wasovilagik_sekefipavuder_lemuz_kobitufo.pdfIn PDF document text
    • https://cdn.sqhk.co/kavejufa/cejbhF6/class_10_maths_rs_aggarwal_solutions_chapter_11.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/jO3hhji/zozapovetidosapotuvore.pdfIn PDF document text
    • https://ladetizor.weebly.com/uploads/1/3/4/7/134731735/2c16692a451.pdfIn PDF document text
    • https://cdn.sqhk.co/kewixoretuze/gfnvGnp/36922207818.pdfIn PDF document text
    • https://worijuxadije.weebly.com/uploads/1/3/4/8/134863955/mekilodanufaditijuf.pdfIn PDF document text
    • http://hotsales-com.xyz/dalekavat0d35w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408704/normal_5fcbd75912566.pdfIn PDF document text
    • https://cdn.sqhk.co/migukosodaza/OHhbHOF/rizaxogorinanogagote.pdfIn PDF document text
    • https://cdn.sqhk.co/wadupaxi/e0qhjiH/police_siren_free_ringtones.pdfIn PDF document text
    • https://cdn.sqhk.co/gujadozede/djf5jgR/14674735524.pdfIn PDF document text
    • http://evromotors.net/637772335531480m.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_off0000cb6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB6B 5452 bytes
SHA-256: 7f511ea381c9c9c48657e26b1e1e48761ca2ab07ea34629b5d3760a6a72199ad
font_01_sfnt_off0000dddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDD 10556 bytes
SHA-256: 3b4365647d0e4be1319682f45dfabd78e59393f4d5653e3a50838ba06bad62d5
font_02_sfnt_off000101c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C1 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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