Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b78376eed320ce3…

MALICIOUS

PDF

67.1 KB Created: 2020-11-06 07:00:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 3cf7f9a1bc3b07a98d02945542c86cea SHA-1: 79a44e7e02e8adba7645b5ba5b4cf73978440623 SHA-256: 9b78376eed320ce392a475ac2f54abe158304e9c65b8ee1d288f59d34b095d3d
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=schafer+bus+schedule PDF link annotation
    • https://jubezotezuwu.weebly.com/uploads/1/3/4/4/134476040/lebepusanikodev.pdfIn PDF document text
    • https://wojuruwebibok.weebly.com/uploads/1/3/4/2/134266806/8d1840f5a909.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/a4e2e1b.pdfIn PDF document text
    • https://tifunubuxeji.weebly.com/uploads/1/3/4/5/134523212/a2f35b826d.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/5ef07c25ec89c5b.pdfIn PDF document text
    • https://kigibituridugu.weebly.com/uploads/1/3/4/3/134352406/e0665d.pdfIn PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/2425589.pdfIn PDF document text
    • https://fagisidide.weebly.com/uploads/1/3/2/6/132682833/wovetuvutolafigoxen.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/pelid_situg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405206/normal_5f98948d27c1a.pdfIn PDF document text
    • https://nidixinaxob.weebly.com/uploads/1/3/0/7/130739699/c2c66c9.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/1d1f8ecc085ca.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/xarojapi/shellys_seafood_homosassa_fl.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/bengali_calendar_1424.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_off0000bc1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC1E 5352 bytes
SHA-256: 1c19925fa46f63e03ef177e933d91e78145681c2449065f1ec1582774f4ba0a1
font_01_sfnt_off0000ce4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE4D 15844 bytes
SHA-256: fbc8893f8f673d2ea7fbdc7d90eb8c9de993dd549b54872453b743556a2d02be

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