Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab2cc74adf066b1…

MALICIOUS

PDF

42.3 KB Created: 2020-10-11 05:58:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: af0bf22f2f0fca3486c16dd8d94df412 SHA-1: 9c4316e9f34ef7133ac3d0cabd22b364e4ef094c SHA-256: fab2cc74adf066b1a09f5fcc3512d530e234190b1fbd57821459ab8b2a45cf2e
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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.com/pify?keyword=cy+fair+isd+calendar+2012 In PDF document text
    • https://site-1039393.mozfiles.com/files/1039393/toxurizuwor.pdfIn PDF document text
    • https://site-1039203.mozfiles.com/files/1039203/24097311886.pdfIn PDF document text
    • https://site-1039932.mozfiles.com/files/1039932/91192773423.pdfIn PDF document text
    • http://files.infinite.vc/uploads/1/3/2/7/132710715/f21a8bc12137f70.pdfIn PDF document text
    • http://files.carasoul.com/uploads/1/3/2/6/132681278/8932404.pdfIn PDF document text
    • http://files.vitalbalanceonline.com/uploads/1/3/1/4/131409761/ad58f3616.pdfIn PDF document text
    • http://files.eliaspartyrental.com/uploads/1/3/0/7/130739052/sasezaxetu.pdfIn PDF document text
    • http://mugugafap.kadsrunning.com/uploads/1/3/2/8/132816202/682ce5c.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/1/0430/5698/8311/files/49376487783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7119/6318/files/23396427422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7440/3480/files/agptek_dog_training_collar_manual.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_off000066f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F9 5348 bytes
SHA-256: 4607a07afac7e6f9053e5743d66834a2293b9e8629becf9fe1818c6f1f6fed03
font_01_sfnt_off00007942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7942 10308 bytes
SHA-256: 79fac44307e6ce10305b578d8808ba78aeafe583ee9c96a5b3bb81f3916b9546