Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c41412113006202…

MALICIOUS

PDF

65.7 KB Created: 2020-10-11 16:21:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: fb98aadfdb8b67eaf509ad17e8b5864d SHA-1: 80656ab3317ce2e268ae15d65864d81e2fa8e9d9 SHA-256: 5c41412113006202ace379a62ae9935ceb2a54fcf7bb972073ca3c292142ed28
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://ggtraff.ru/strik?keyword=shades+of+elysium+character+creator In PDF document text
    • https://site-1037088.mozfiles.com/files/1037088/wixutibekisakaku.pdfIn PDF document text
    • https://site-1045331.mozfiles.com/files/1045331/12550462263.pdfIn PDF document text
    • https://site-1042734.mozfiles.com/files/1042734/20383666919.pdfIn PDF document text
    • https://site-1036681.mozfiles.com/files/1036681/75739266702.pdfIn PDF document text
    • https://site-1039847.mozfiles.com/files/1039847/25430017123.pdfIn PDF document text
    • https://site-1036884.mozfiles.com/files/1036884/40989833351.pdfIn PDF document text
    • https://site-1040289.mozfiles.com/files/1040289/zodizenusobezejukakekijuj.pdfIn PDF document text
    • https://site-1043051.mozfiles.com/files/1043051/72764793244.pdfIn PDF document text
    • http://xozurof.tornadof3.info/uploads/1/3/0/7/130740164/ruwibabaxiwax.pdfIn PDF document text
    • http://files.rivermansioncelebrations.co.uk/uploads/1/3/1/4/131453631/tonifisodiril.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/c91e97cc-2ea6-4580-a0e1-b5015b3e6ac6/bijuforetitarose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b235397c-cdb7-4a98-bb05-236212ae16d8/25968192431.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc4e890b-8074-4344-a762-176eb57f98a4/simegubopezatonepegila.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_off0000c4b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4B9 5468 bytes
SHA-256: f36dc06b31fb3ffdc702d35a381eca97d94561e06b297939ff1a33f6af51065e
font_01_sfnt_off0000d729.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD729 10140 bytes
SHA-256: efd9315cab60f7c7867214ccec4b07016aafdc34819bc8fd463d97fb9bd89b23

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