Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aeca9b2da7d945d…

MALICIOUS

PDF

41.5 KB Created: 2020-10-09 05:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 582e6914dafdf46e5b99e390e96b2a9d SHA-1: 3a0a47d0b003c77d68d8b320c9d98d709232a115 SHA-256: 8aeca9b2da7d945dabc599ce95fac1f1e359786e01c3ca8529672b1471e1725a
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/pify?keyword=world+mythology+the+illustrated+guide+pdf In PDF document text
    • https://site-1040293.mozfiles.com/files/1040293/56567452678.pdfIn PDF document text
    • https://site-1039375.mozfiles.com/files/1039375/niwezix.pdfIn PDF document text
    • https://site-1039361.mozfiles.com/files/1039361/21164812697.pdfIn PDF document text
    • https://site-1036724.mozfiles.com/files/1036724/firomujodu.pdfIn PDF document text
    • https://site-1044146.mozfiles.com/files/1044146/64999349400.pdfIn PDF document text
    • https://site-1040280.mozfiles.com/files/1040280/4760217325.pdfIn PDF document text
    • https://site-1037184.mozfiles.com/files/1037184/24213020376.pdfIn PDF document text
    • https://site-1038949.mozfiles.com/files/1038949/bitidizabavodukulixebured.pdfIn PDF document text
    • http://nabowon.frankklohr.com/uploads/1/3/1/3/131397997/dededubib_dodegixi.pdfIn PDF document text
    • http://sibita.buildabrain.net/uploads/1/3/1/4/131453527/bubuligore_laziwufefeboro_gazukubakoka_xajok.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/86f25346-c218-4468-9304-380cede1487b/16633522539.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f11ff455-9c0f-46a1-afa1-54395fa59014/99448359294.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_off0000631a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631A 5568 bytes
SHA-256: d7b500a278ce64549008da1da53bbecb37180e034b2d69b9537746333e8cf98c
font_01_sfnt_off000075f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F2 10256 bytes
SHA-256: f6ac9b63bd439efdd4541d3b245f40bbc2c76332b1533305ca3795e12c25bcf3