Malicious PDF — malware analysis report

Static analysis result for SHA-256 834b14ac983b8122…

MALICIOUS

PDF

74.8 KB Created: 2021-02-07 17:51:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5e54c0904cfc27dc00e3b58fef501ef5 SHA-1: 51e168870de5ad124a2c648ca80d0002e52a7636 SHA-256: 834b14ac983b81227def2c4ad2f848ccc3a2c49ac37115c6022addccb807aff0
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://druttle.ru/wb?keyword=danganronpa%202%20trial%203%20guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465025/normal_5fff76a36df56.pdfIn PDF document text
    • http://pressit.fun/74863977539ljpcz.pdfIn PDF document text
    • https://gizunujidibe.weebly.com/uploads/1/3/0/8/130814387/3012565.pdfIn PDF document text
    • https://gitujibexilen.weebly.com/uploads/1/3/1/4/131406430/5765089.pdfIn PDF document text
    • http://lidlid.xyz/402857837536d08h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450041/normal_5fce8d9129104.pdfIn PDF document text
    • http://8bitbeardsco.com/amar_y_dependergy4wu.pdfIn PDF document text
    • https://doxorovovo.weebly.com/uploads/1/3/4/4/134479089/8669185.pdfIn PDF document text
    • https://cdn.sqhk.co/vomikigiw/S04jdyT/10703904099.pdfIn PDF document text
    • http://theharaka.online/vutifukevatcs1c.pdfIn PDF document text
    • http://buloshnaya.site/enthusiasm_tamil_moviesk0r9h.pdfIn PDF document text
    • https://rixafewokeget.weebly.com/uploads/1/3/0/7/130739987/9950144.pdfIn PDF document text
    • https://judozolu.weebly.com/uploads/1/3/1/4/131407514/wavafusuwu-nizomu.pdfIn PDF document text
    • http://harmony-market.ru/3805420969xsk0q.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/fizaxo/facebook_messenger_pc_windows_8._1.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_off0000e76f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76F 5244 bytes
SHA-256: 575a146fe62f89c9d3470eafd5acb6b4efeff2353275441ca99a453a202fd941
font_01_sfnt_off0000f95e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF95E 10884 bytes
SHA-256: cbe47aac645da77cb42f07347a27c7302d548863b881cc293843fb85243b0578