Malicious PDF — malware analysis report

Static analysis result for SHA-256 223bf7c74464256e…

MALICIOUS

PDF

45.6 KB Created: 2020-11-09 01:48:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 0d1ae8eccf8fb0e26424158d54ea4f2e SHA-1: b3bd19f2235fe4dc9967435c2e477e0df9446ade SHA-256: 223bf7c74464256ee54ffd17276dc29aee382af49153a0249f74e03a86896cfa
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://traffset.ru/123?keyword=steven+universe+guide PDF link annotation
    • https://karezolakep.weebly.com/uploads/1/3/1/3/131398125/xitit-samawomiwat-nifavepepug-xadubero.pdfIn PDF document text
    • https://maguduvogusimog.weebly.com/uploads/1/3/4/5/134583052/2429251.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/xelelovolaxatusimuw.pdfIn PDF document text
    • https://fomezesas.weebly.com/uploads/1/3/4/3/134343882/7313720.pdfIn PDF document text
    • https://xufiwelak.weebly.com/uploads/1/3/1/1/131164558/gajonituruxid-fapudurodexuto.pdfIn PDF document text
    • https://gowiwoniba.weebly.com/uploads/1/3/1/8/131857243/bumovozoreverenuxamu.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/9a9b4bd8.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/126930.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
    • https://uploads.strikinglycdn.com/files/b0b756f8-b77e-4a96-93fb-f7d579b04ce9/fisusas.pdfIn PDF document text
    • https://jonitolatej.files.wordpress.com/2020/11/silversmithing_for_jewellery_makers.pdfIn PDF document text
    • https://waxixevot.files.wordpress.com/2020/11/kifufef.pdfIn PDF document text
    • https://gogelexu.files.wordpress.com/2020/11/el_libro_vacio_josefina_vicens.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c56c6de-5fdc-47dc-926e-0a9275fff8e3/48194827108.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6707 4684 bytes
SHA-256: 19cf3c9b62cb5809a344caad8e18000601f6a4c801c809bca99b2d85ebe55d6d
font_01_sfnt_off000076fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76FD 11152 bytes
SHA-256: e4af8b6fd25d57e5da48f3b8482a8dccae78ce696c3944deabc78a719c738b08
font_02_sfnt_off00009bd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD3 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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