Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ce03fa11245247…

MALICIOUS

PDF

35.2 KB Created: 2020-10-11 04:12:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 98b27c245b410c60a9f86d8722119121 SHA-1: 912e417103dfab82c1e09d0d8debd13c5c3dff6a SHA-256: 70ce03fa112452473c6e09e1ccd038d6f11550b9f47c5f19f08b3b7250cff500
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://ttraff.me/pify?keyword=mr+wilson%2527s+war In PDF document text
    • http://sademor.gillianhurrie.com/uploads/1/3/1/0/131071117/3d111bcec99.pdfIn PDF document text
    • http://files.judahbrody.com/uploads/1/3/0/7/130738711/sezudoxunip.pdfIn PDF document text
    • http://zivisid.denialphotography.co.uk/uploads/1/3/0/7/130776083/4836650.pdfIn PDF document text
    • https://site-1039604.mozfiles.com/files/1039604/wumugidodotetidagitomim.pdfIn PDF document text
    • https://site-1041949.mozfiles.com/files/1041949/47582452883.pdfIn PDF document text
    • https://site-1037900.mozfiles.com/files/1037900/dejivunemosomibigimut.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/0b316b7f-c92c-4038-8e6e-b28129218c6c/buravuto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f81fc38-2e9f-44bb-94f5-ee32baf78897/mijiduzimatezuni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e7621f5-2c88-4448-937a-648b22efeac8/86340591001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9cb88aa-303c-4cf3-8a27-68dc501147bf/lapikenuvuzixudevidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7457/7086/files/28726623075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8646/6210/files/inventory_of_parent_and_peer_attachment_scoring.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_off00004e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E73 4812 bytes
SHA-256: a9a4e66b82f79421932196610d453a7f5b51b5e18879dca4beb0116f52475808
font_01_sfnt_off00005ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF8 9696 bytes
SHA-256: 5ad49ab05f34df5b768f7e95334f6ed469a992ce4beb1ad434c5bfd977c0720f