Malicious PDF — malware analysis report

Static analysis result for SHA-256 4febc06cd5067184…

MALICIOUS

PDF

36.3 KB Created: 2020-11-07 05:58:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 860574f63c9e6c70c8357fd20ac3dfb2 SHA-1: c9fb491b5bb49e25e6218ba73beb15b016ec15e3 SHA-256: 4febc06cd50671840768281480cf271db45109cd364a7ab4385fefd0b18c72c1
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://trafffi.ru/aws?keyword=8th+grade+science+study+guide+answer+key PDF link annotation
    • https://dubuzosokiboxof.weebly.com/uploads/1/3/1/1/131163723/1651088.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390996/normal_5f991f3883a1e.pdfIn PDF document text
    • https://vajigapevinukaz.weebly.com/uploads/1/3/4/5/134578345/fanidimuwekopo-zonamerimev.pdfIn PDF document text
    • https://jovofodofipepij.weebly.com/uploads/1/3/2/6/132682866/damebanuf_zasopegakufena_jevebo_tulaviguvuxidaf.pdfIn PDF document text
    • https://jatilesaza.weebly.com/uploads/1/3/4/3/134316516/c53fc315f9607.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368219/normal_5f8f1664c0a08.pdfIn PDF document text
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/2895765764.pdfIn PDF document text
    • https://nedudefo.weebly.com/uploads/1/3/4/3/134389218/c6670f8067b35.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/jibigamefomoni.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/bubeto/machines_of_loving_grace.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/16846866489.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/7845744702.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/73788096097.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a55c7a3-0a25-4a5e-a13b-26d6721cd9ab/lincoln_center_chapel_hill_nc.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/67401781344.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_off00004ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CA8 5528 bytes
SHA-256: 851741230e0326b49fd265b97c7fd32d76c8179fdac885dc3c5b172bd06d5c76
font_01_sfnt_off00005f80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F80 10936 bytes
SHA-256: d4d0a03e0e88fa19b48bd85918edd8fec04bff21507149e4281c190827f27965