Malicious PDF — malware analysis report

Static analysis result for SHA-256 dea0d9824a855559…

MALICIOUS

PDF

38.2 KB Created: 2020-10-21 16:50:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: ace7f62127020cee4c7126bad724b764 SHA-1: 537e09e619b0082b07262388aada46946c6124be SHA-256: dea0d9824a855559c31d8783391cec6dca342c8d73aada27b950a137b772271e
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://gettraff.ru/aws?keyword=beira+alta+menu+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371524/normal_5f8fe6caa1af5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380411/normal_5f8c84756673e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370078/normal_5f8dec35f268e.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/6808592.pdfIn PDF document text
    • https://xuvakaxatal.weebly.com/uploads/1/3/1/0/131070170/800671.pdfIn PDF document text
    • https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/wilajonasadavid-vowojinujimep-tarigux-kapiwak.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/jarazer.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/9402018.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/bolirib.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/jesozitufas_bareradikakap_zopan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wonoti/luluwejojebe.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/liberalization_policy.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/24529148724.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/a_beginners_guide_to_investing_ivy_bytes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9874959-2102-4790-95d0-5de072af2bd3/31349337426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce2d48b3-4e05-41dd-9c46-3d470db933a5/halo_new_blood_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b51db28e-ed7a-4514-90a4-c5fc387be314/example_corrective_maintenance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9acc053a-c83e-4db9-831a-39a080ab3831/4789186202.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40d04598-b39a-4cfd-afc7-bdb777b0820f/meal_planning_guidelines_for_obese_p.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_off0000588e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x588E 5056 bytes
SHA-256: e0f76fc7d8b5777f9e5acaf48c8982c11cfd335e28b8b62e2d2c21bb913f60b7
font_01_sfnt_off000069a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A2 10232 bytes
SHA-256: aa1804b4b10481a5e0dcfd293383367b8d15a5731769038eac098a139c50bc02

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