Malicious PDF — malware analysis report

Static analysis result for SHA-256 b25f22badd86957d…

MALICIOUS

PDF

45.7 KB Created: 2020-11-08 23:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 39c3d022c0e5d732c99d6c7594ee3342 SHA-1: 0141207606501b19d409cb6321096d9818878436 SHA-256: b25f22badd86957d3e6e4d8604cc0eb90a2c093ac511f67e15fc4876100c96e9
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=bowling+family+gospel+singers PDF link annotation
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/3b12b7.pdfIn PDF document text
    • https://zobejonimofov.weebly.com/uploads/1/3/4/3/134354570/8197368.pdfIn PDF document text
    • https://mogunugive.weebly.com/uploads/1/3/4/3/134381007/detagevo.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://dedalepu.files.wordpress.com/2020/11/icao_annex_8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bbbe0b1-211e-49e0-8a96-9dd547b2abb0/wiwofapuvizoxofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fd92fba-a8d0-4bd1-9ad5-88201acc3f36/samosugivawaligetonasuk.pdfIn PDF document text
    • https://zewiduw.files.wordpress.com/2020/11/96361476564.pdfIn PDF document text
    • https://fategokixeju.files.wordpress.com/2020/11/jasajapabuzodevuboja.pdfIn PDF document text
    • https://zokelemix.files.wordpress.com/2020/11/delonghi_magnum_radiator_heater_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aa4782b-3dfc-4fce-a501-6ef5b33f9dc4/88924485270.pdfIn PDF document text
    • https://xoxedoxiki.files.wordpress.com/2020/11/pifojofopedometiziz.pdfIn PDF document text
    • https://tifefexevox.files.wordpress.com/2020/11/tanojolijulobizedebon.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_off000067cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67CF 5172 bytes
SHA-256: 292d7838e6f01e2a20defe7e1c567908e2bdd20ae9c14d8718d674d00e1b8dd6
font_01_sfnt_off0000795e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x795E 10200 bytes
SHA-256: 3f3441333fe0b0db20036e9541edf2ab4619d44560a6a888f3f5a8cd9cee51fa
font_02_sfnt_off00009c4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C4C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361