Malicious PDF — malware analysis report

Static analysis result for SHA-256 815c9920840fd5f7…

MALICIOUS

PDF

41.7 KB Created: 2020-11-06 20:48:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: e657843095811d49f47db4f1a022fdd8 SHA-1: f10bcb85b328ff08ded7aa18a3c36b905f28bba2 SHA-256: 815c9920840fd5f710f05c026a3819e1e2283c396cfe2cb28425aae18dcee8fa
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/aws?keyword=statement+of+faith+examples+for+application PDF link annotation
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/miwuxelo-kikukiroli-vitijataw.pdfIn PDF document text
    • https://nogomikosisodop.weebly.com/uploads/1/3/2/6/132681488/rizotexejipitojetul.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/2cd1b0a64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_5f875fdfb7bce.pdfIn PDF document text
    • https://zelikozuka.weebly.com/uploads/1/3/4/5/134594864/xezitel.pdfIn PDF document text
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/mizikix_bisatezi_nepinek_bebixakewos.pdfIn PDF document text
    • https://towetebofipu.weebly.com/uploads/1/3/1/4/131437669/bavotasikatuza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415745/normal_5fa1453b9d46c.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/xanebavifamopez/ultimate_antihero_light_novel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f33a4d40-7d99-4421-9335-8de754301a0a/corner_spot_dixon_il.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2ee3d70-3ca8-4d0b-b41c-409f7ec1822c/88387936838.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/limitless_full_movie_123movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ced9421-3998-4c18-9459-608574e9522d/vogadugevig.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_off000065b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B3 5428 bytes
SHA-256: f1964e980f02c8bd317f4343a19701b50ab392d1a1e08b3721b7dd228f8bedb9
font_01_sfnt_off00007805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7805 10076 bytes
SHA-256: a9d89ba4839b03126ac79e2651a185722e6a1d1592b004917fe2554fae9cdb6a