Malicious PDF — malware analysis report

Static analysis result for SHA-256 42fbbdaca0dd4259…

MALICIOUS

PDF

56.4 KB Created: 2020-10-02 10:01:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2a0867a1837b59261d1aa93c5ffb0f9a SHA-1: 53d52e4caaf64eb815d36bf7400d29779d62000c SHA-256: 42fbbdaca0dd42590bc408d925f9975aaff9c503a69146c77a8dcac16c8bf4e2
164 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.club/pify?keyword=dual+monitor+graphics+card+and+onboard In PDF document text
    • https://site-1038382.mozfiles.com/files/1038382/loziwojapiduxotonav.pdfIn PDF document text
    • https://site-1038925.mozfiles.com/files/1038925/59450374302.pdfIn PDF document text
    • https://site-1036814.mozfiles.com/files/1036814/tifozuwevejux.pdfIn PDF document text
    • http://files.cameraygal.com/uploads/1/3/2/6/132681409/guwapot.pdfIn PDF document text
    • http://files.inkandoakdesignco.com/uploads/1/3/0/8/130814120/644b8e229a.pdfIn PDF document text
    • https://site-1036633.mozfiles.com/files/1036633/bobigonozifixobu.pdfIn PDF document text
    • https://site-1037882.mozfiles.com/files/1037882/nexovugupefam.pdfIn PDF document text
    • https://site-1036694.mozfiles.com/files/1036694/32742368689.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/928fa85a-7198-4a49-85a7-0f96fdefe009/muzumapugewenomi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8bc455c-08f8-4343-8d76-aaac148fa23b/48157911886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28d96bc8-ad3b-40cf-a19a-c65cd11cfd4c/93041496061.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_off00009d82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D82 5624 bytes
SHA-256: 7683008fcde52e572b1420645486d4f3b11166b3f3dabbcb3ef7d906f10e3ce5
font_01_sfnt_off0000b074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB074 10628 bytes
SHA-256: 87c491bb2676d75fa1315ccc3bdf230f500e355321fb461105b16d81af8240f5