Malicious PDF — malware analysis report

Static analysis result for SHA-256 22de799d4b76a518…

MALICIOUS

PDF

37.1 KB Created: 2020-11-09 08:53:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: f6340a1e78667ed8f886d06c89455be6 SHA-1: 364781e8bb3203b0b4fc1f2408b9073b924fea65 SHA-256: 22de799d4b76a5182c8b9dedba998973b9047d866b07a896278ac43aedf5e2ea
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/aws?keyword=coleman+sportcat+parts In PDF document text
    • https://cdn-cms.f-static.net/uploads/4402963/normal_5f9a97bcb6fed.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/zegabileniwiv.pdfIn PDF document text
    • https://tenimevu.weebly.com/uploads/1/3/4/3/134315692/5908381.pdfIn PDF document text
    • https://lonugawewubosil.weebly.com/uploads/1/3/4/6/134627014/9135bc5c895.pdfIn PDF document text
    • https://bogezozoxo.weebly.com/uploads/1/3/4/4/134479702/popuxojoduj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403946/normal_5fa19bb7b1143.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/4291e754-e731-4364-82ce-99c4c39d1770/20619527824.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f527f78-72d2-4b19-a4c5-551058cd82ee/rimosemilaruvifoxarirupu.pdfIn PDF document text
    • https://pifakimep.files.wordpress.com/2020/11/fododuxuxinoni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14510e5b-0f9b-4eda-8dfd-649635525836/80853268427.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a97da38-18c2-4d63-bf50-0772b56bcca8/54575407426.pdfIn PDF document text
    • https://vazurude.files.wordpress.com/2020/11/8711866058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74d866e2-686b-49bc-b358-9e2efdf6ba2e/nv20_full_version.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_off00005330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5330 4984 bytes
SHA-256: bd4989836d71e00075382d39b6981b1004cfeab9febf704455cd77fe8cbe08db
font_01_sfnt_off00006404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6404 10512 bytes
SHA-256: dd20a99f83cd4a225b5d6b3db19dcda1c496522dee390ac94da5bbc0f3c3f03a

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