Malicious PDF — malware analysis report

Static analysis result for SHA-256 64921bd8e81dd357…

MALICIOUS

PDF

46.7 KB Created: 2020-11-06 20:30:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 4ab3807be68988bfe3ddbaa5c58d099c SHA-1: 17c49959e7ea66de59e77cf30baac94542db337d SHA-256: 64921bd8e81dd3574ec39cf2c8e51fea085b99b1a7f43b9ca79dbc09ca4c6b31
74 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://traffset.ru/123?keyword=turnitin+plagiarism+checker+crack PDF link annotation
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/ceaf0127784.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/fixalejug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f96d1c61bdb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370266/normal_5f8af2154722b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/temas_rlacioados_co_amistad_y_amor.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/nezavafemefoxuk.pdfIn PDF document text
    • https://vabavoresadi.files.wordpress.com/2020/11/debewasomogoro.pdfIn PDF document text
    • https://suvarofora.files.wordpress.com/2020/11/lodebukiworidu.pdfIn PDF document text
    • https://tuxabavijig.files.wordpress.com/2020/11/37940387668.pdfIn PDF document text
    • https://sosomaper.files.wordpress.com/2020/11/43649395893.pdfIn PDF document text
    • https://sewulanajul.files.wordpress.com/2020/11/misezopajexanekuvanigakez.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B7 5360 bytes
SHA-256: 0af5141bd554feea4387d2223c55d6778ce2df0bfc8fd6144a90177b3391a407
font_01_sfnt_off000088c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88C8 11008 bytes
SHA-256: 2d4c5bcfeea732d2970fa88da08810abb895ae0d066eba0c23c81ad99a10315a