Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e260feeab0b4211…

MALICIOUS

PDF

56.3 KB Created: 2020-11-09 04:10:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: ddbc4250280d7695d049d85ff350fbb7 SHA-1: 23ff18a4a741e34ba0969eecbc7427745cea45c1 SHA-256: 5e260feeab0b421195f95e4a68f3f9565dc776977924cdddc38651a5ac205830
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://ggtraff.ru/123?keyword=angry+birds+rio+apkpure In PDF document text
    • https://zajasonasijo.weebly.com/uploads/1/3/4/6/134627958/dedenazogaz-sibewodazunoti-gapekegefijan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375075/normal_5f8d84d077b3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404966/normal_5fa2bbb7a1782.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425504/normal_5f9c7420e3611.pdfIn PDF document text
    • https://wanezetisozol.weebly.com/uploads/1/3/4/4/134468493/b942a04a249df69.pdfIn PDF document text
    • https://fuduxudeki.weebly.com/uploads/1/3/4/6/134606049/5204096.pdfIn PDF document text
    • https://resedofuza.weebly.com/uploads/1/3/4/5/134503764/tufimub-najijipap.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/debizikirapanas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425912/normal_5f9aa4755ba17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379959/normal_5f8de970770a5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://xaxowemevole.files.wordpress.com/2020/11/el_secreto_de_mi_marido_google_drive.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/84165727883.pdfIn PDF document text
    • https://falikajudepi.files.wordpress.com/2020/11/93234939402.pdfIn PDF document text
    • https://ganibeme.files.wordpress.com/2020/11/demadurofim.pdfIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D91 2984 bytes
SHA-256: 41bd14e8c6e132cfc9d208e6465c2bd4324c05ca455a425fd5dba2515d73190b
font_01_sfnt_off00007841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7841 5388 bytes
SHA-256: 5e4ebd821f46bb741d024da516a6bbd6834e839923c9b634c754dbc919f740c4
font_02_sfnt_off00008aa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA4 2140 bytes
SHA-256: 3eadf3ff1ae85f7a2dd8be852d633ca148c1d24200a16cbd4325889adc5789c4
font_03_sfnt_off0000947e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x947E 10952 bytes
SHA-256: e14fd2f0d2fc8dd8d707fa7b3e8a88d126f29d235a71af5a96caa488b18a2965
font_04_sfnt_off0000b927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB927 16996 bytes
SHA-256: 1b574e6ffc074880a96eeab33846d5ea1e916bf0b41a7b3a773aa82eafbbc6e0

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