Malicious PDF — malware analysis report

Static analysis result for SHA-256 9383c35a338d1dee…

MALICIOUS

PDF

36.8 KB Created: 2020-11-08 08:50:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 21a0701c398305329ca2caf2badf32c7 SHA-1: 4a6512fe114f13755edd60b821ce647a6350b8dd SHA-256: 9383c35a338d1dee1f642e8f16cdcb3a1ba168d890f1df4928cf84bb4b623c61
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://trafffe.ru/aws?keyword=mi+explorer+apk+download PDF link annotation
    • https://sizukejagu.weebly.com/uploads/1/3/2/6/132681884/b0521262.pdfIn PDF document text
    • https://biwilodumiz.weebly.com/uploads/1/3/4/3/134319983/9656700.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://s3.amazonaws.com/sixenogafopoj/95441296912.pdfIn PDF document text
    • https://duwozonitumo.files.wordpress.com/2020/11/sikewipisajaxovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5629dc92-c43c-43e8-a0b7-514e5dbbe63d/42829286928.pdfIn PDF document text
    • https://fujixowezizu.files.wordpress.com/2020/11/xamurevasomevasadedot.pdfIn PDF document text
    • https://pomazevesala.files.wordpress.com/2020/11/karcher_411a_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/amidah_in_hebrew.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/jajegu.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/trump_how_to_get_rich_espaol.pdfIn PDF document text
    • https://papinidatit.files.wordpress.com/2020/11/57084615641.pdfIn PDF document text
    • https://rotadenig.files.wordpress.com/2020/11/82236523173.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_off00004486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4486 4712 bytes
SHA-256: 9c943369df2bac9e26a2f66803cfd1049be9f1999edc18a79bfa94b5389d6f7f
font_01_sfnt_off000054a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54A2 10616 bytes
SHA-256: e8a252258f5a31d4555f6fa46ce4c278f1d9c923c7b6c24bfeaa756fa2208851
font_02_sfnt_off0000787f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x787F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361