Malicious PDF — malware analysis report

Static analysis result for SHA-256 e18f227c7e6aecad…

MALICIOUS

PDF

41.5 KB Created: 2020-10-02 15:45:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0d97addc7b289e795f7e28cdb1d9e0b0 SHA-1: fdfb27db77f9406485c8b9a7d10b54b795fe36c9 SHA-256: e18f227c7e6aecadf5d8b278cbfddd008480846c4da5814175440093308421fa
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://ggtraff.ru/strik?keyword=shredded+body+workout+pdf In PDF document text
    • https://site-1038940.mozfiles.com/files/1038940/26158111832.pdfIn PDF document text
    • https://site-1040597.mozfiles.com/files/1040597/14408840851.pdfIn PDF document text
    • http://pobop.teresamunn.com/uploads/1/3/2/6/132681396/zusuvokavisojipujow.pdfIn PDF document text
    • http://files.morinarts.com/uploads/1/3/1/1/131163969/kagekogis.pdfIn PDF document text
    • http://files.havenartistry.com/uploads/1/3/1/4/131483235/10c7f.pdfIn PDF document text
    • http://files.courtenaylbc.com/uploads/1/3/2/7/132740264/3256838.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0324/7781/files/aptoide_apk_apkpure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4997/4946/files/intersection_of_two_lines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4388/9058/files/vanilla_wow_warlock_pet_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf1a1a2e-7fdc-43ad-87d4-ebf4d06c5c86/7135635712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8efc7a72-4dfb-408c-9d27-b32cb1791fce/gomelerivadememijogarujus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9013a453-64bd-4a2a-8c17-0268f8997c00/wamedojibokenoliretut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7094aef4-6552-4907-a7de-154cb45cce23/14794510714.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23c0e0a1-c963-4dc5-932e-0a7aef7e1d81/9508531674.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_off000064a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A6 5208 bytes
SHA-256: e9fbcdbf1b74c3569f3fd8e8c1e3703b8555aa4dd715beb26133993752d17cb6
font_01_sfnt_off00007670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7670 10540 bytes
SHA-256: efe543d3ac52aa81b8a5a21c7bf99a95aef433c86dd9256e10a00ea23f3b692d

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