Malicious PDF — malware analysis report

Static analysis result for SHA-256 cba763260f1268af…

MALICIOUS

PDF

46.0 KB Created: 2020-11-09 05:41:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 250a1ceb7ea38d74454e740a8e334b72 SHA-1: 14f104b66202e18d2e4b9a562a4900b3b2f82d5f SHA-256: cba763260f1268afc5be631f65665889c22821f0acbda75043d5c2389a450afe
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://trafftec.ru/aws?keyword=fun+games+unblocked+online+multiplayer PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f896c4ead909.pdfIn PDF document text
    • https://vafuzetok.weebly.com/uploads/1/3/2/7/132740798/manubebunufi.pdfIn PDF document text
    • https://watuboxe.weebly.com/uploads/1/3/4/5/134588214/e736dbceba28.pdfIn PDF document text
    • https://vuxarujetununo.weebly.com/uploads/1/3/4/4/134437765/rexevikekokid-lekezemil-wapopozeduj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403954/normal_5f91a0425d82b.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/baremixapegiwosupit.pdfIn PDF document text
    • https://sexanugujox.weebly.com/uploads/1/3/4/2/134266496/pobukemuguge_dulibaginu_nevivi_vujipugodobovu.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/86e0485e-5ef0-4c01-b4c3-9e68f07634ab/88281816184.pdfIn PDF document text
    • https://nolapebav.files.wordpress.com/2020/11/fubewesukeb.pdfIn PDF document text
    • https://mivumog.files.wordpress.com/2020/11/dasideroroxerututekolut.pdfIn PDF document text
    • https://delogifelet.files.wordpress.com/2020/11/xivopadepufafiwetedomaxet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f841d745-1063-4e88-9826-d0d9c2c16e70/64283003.pdfIn PDF document text
    • https://zewabugajumo.files.wordpress.com/2020/11/87881813145.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18ec2a1a-a6dd-4b1d-a054-2715f07ab69b/op_sword_command_1.12.2.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/download_autocad_2020_with_crack.pdfIn PDF document text
    • https://jokikujiwer.files.wordpress.com/2020/11/xifibobomajule.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/50283472882.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_off000066a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A7 5536 bytes
SHA-256: 2b067af8d781512951c6e69aa80da8aebd6728524941e297b06faaecaa9e4666
font_01_sfnt_off00007961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7961 10392 bytes
SHA-256: 14a22312c97b7658a9b0677aaf11176e94729bb2b725ea68f7a147ab6f1cc632
font_02_sfnt_off00009cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CB0 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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