Malicious PDF — malware analysis report

Static analysis result for SHA-256 da2fca5233b24cac…

MALICIOUS

PDF

46.3 KB Created: 2020-10-15 01:55:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 547b0ed6e1c03d492aa3d819d5658da4 SHA-1: ba8504a5fdeeb91c23e186de6370cf7caa58989e SHA-256: da2fca5233b24cac099eddeb23b8b2cf2a6c931a95a5f7d38ee6a406ecfb86cd
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://cctraff.ru/strik?keyword=install+wifiphisher+di+android+menggunakan+termux In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367941/normal_5f87725fc51ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365621/normal_5f8716e6555a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f877a532b368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5f877feda42ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366665/normal_5f8781477710e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5f87328f8c1f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366402/normal_5f871717ab464.pdfIn PDF document text
    • https://site-1036783.mozfiles.com/files/1036783/45299231162.pdfIn PDF document text
    • https://site-1040681.mozfiles.com/files/1040681/wavurafutopo.pdfIn PDF document text
    • https://site-1043699.mozfiles.com/files/1043699/dimiganejudikakewutafir.pdfIn PDF document text
    • https://site-1041485.mozfiles.com/files/1041485/96981354969.pdfIn PDF document text
    • https://site-1041485.mozfiles.com/files/1041485/19636977635.pdfIn PDF document text
    • https://site-1039274.mozfiles.com/files/1039274/41090041146.pdfIn PDF document text
    • https://site-1042622.mozfiles.com/files/1042622/62687665494.pdfIn PDF document text
    • https://site-1043878.mozfiles.com/files/1043878/zebokipogafikoledeto.pdfIn PDF document text
    • https://site-1039378.mozfiles.com/files/1039378/64898354014.pdfIn PDF document text
    • https://site-1036699.mozfiles.com/files/1036699/27400639942.pdfIn PDF document text
    • https://site-1036993.mozfiles.com/files/1036993/18272452755.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/d4b33bdb-a13e-4346-bd23-857fca9eba78/dofawurota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3639850d-3863-414c-b4f6-546a3c881d23/gemelow.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DB 5500 bytes
SHA-256: 06ab7d1a77058553e98c7582422f4ac818a178c3eeb8fca5eea0b7b7cb36af5f
font_01_sfnt_off00007a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A69 10212 bytes
SHA-256: 9726994536f42eb1967d263e7b59b737cde4b0c24512a8cb501fbf128a020d8f
font_02_sfnt_off00009ce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE7 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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