Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ac00d781e3f6ac…

MALICIOUS

PDF

50.3 KB Created: 2020-11-08 11:51:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 3afa1a76da32ca6c01207931ea74c27b SHA-1: e433bbecaceb8fc68bfb398e09d05ea83d8768fd SHA-256: 75ac00d781e3f6ac02324b0a0e9abf4be59c4e1e3c59e1d8528b98522dd4abc6
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://trafffi.ru/wb?keyword=craftsman%20gt5000%20lawn%20tractor%20manual%20pdf PDF link annotation
    • https://podesasi.weebly.com/uploads/1/3/1/4/131437149/novisem-bibasor.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/4102594.pdfIn PDF document text
    • https://javumegibevi.weebly.com/uploads/1/3/4/6/134634398/mefemuve-jajogizowa.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/zovobimaxodeki_gepopemilijen.pdfIn PDF document text
    • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/golajit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6378308e-8f3d-4727-a023-50f6773ef779/wariwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/505b46da-c14d-45df-8282-fa5302484bd4/govesadebadol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e4125b2-bf11-43ff-80ca-9107bd4ac22f/essentials_of_oceanography_garrison_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19cab29e-4ff4-4d0b-9bf0-dba800bd2707/64694829605.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be3e01e9-030d-41d7-98ec-1a585b4539da/83853561580.pdfIn PDF document text
    • https://teviwuder.files.wordpress.com/2020/11/nazumube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7283a780-2980-405b-b05b-1132b2aa33e6/62532753910.pdfIn PDF document text
    • https://pegivafonaj.files.wordpress.com/2020/11/38180585292.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c30af4d3-25d0-4da7-84fb-d8377b488f34/1525516049.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70f7df91-d37b-4ca2-b5f7-6d2068719a5a/kedofagigidol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d57e960f-b23d-4550-9c3e-bb35b426c663/pavel_tsatsouline_stretching.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_off00008497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8497 5740 bytes
SHA-256: 2c39ca8ce48a3195837f3e01822df9bcef13b1ce0de656c6ad2055f692cbe2b3
font_01_sfnt_off00009820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9820 10772 bytes
SHA-256: 914db68c216a8c35db0cc53ad5af6a674a68dd5b3b6abc9fd1ea1faa7b19d9e6

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