Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf7091dd4c627107…

MALICIOUS

PDF

48.2 KB Created: 2020-11-07 10:17:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 32ac42db9a5c89ec3253035f17fa4ec8 SHA-1: dc6717e3771b64730da9d7e393e00a7f5ac1b8c9 SHA-256: cf7091dd4c627107bd19daa02d7298ffdf81e99855ab01e98c058448f81af2fc
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://trafffe.ru/123?keyword=baidu+translator+apk+android PDF link annotation
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/pakulugip.pdfIn PDF document text
    • https://wizaxonaguwaxi.weebly.com/uploads/1/3/4/3/134306690/2777237.pdfIn PDF document text
    • https://ranerenonosojib.weebly.com/uploads/1/3/1/4/131483420/1132172.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369933/normal_5f9b12cf4fe71.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nupotukig/william_blake_the_little_black_boy.pdfIn PDF document text
    • https://mepugen.files.wordpress.com/2020/11/javugivoxoxapajan.pdfIn PDF document text
    • https://legowuvirifa.files.wordpress.com/2020/11/latoki.pdfIn PDF document text
    • https://dunefufurux.files.wordpress.com/2020/11/neoclassical_architecture_characteristics.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/povodusanoxanojasupemaw.pdfIn PDF document text
    • https://zisevudefig.files.wordpress.com/2020/11/dreamwear_sizing_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/94354738432.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FC 1736 bytes
SHA-256: cd07a726b311b47002760b454662cf40021507926c323e310a885318975cc65b
font_01_sfnt_off00006963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6963 5064 bytes
SHA-256: cf63a3886cc377b1256227d2c568ca9a8f5934e72613525720fdbbc21db64307
font_02_sfnt_off00007aab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAB 10276 bytes
SHA-256: e6840a693f3ba7c42f0cda15d580980ca0362a927f27b0a73c4473283e093f3a
font_03_sfnt_off00009e12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E12 16092 bytes
SHA-256: 2c5f1a2e3d9f683f6a217a47aeaaae813f7d4ef732a5ff54a929695507d09140