Malicious PDF — malware analysis report

Static analysis result for SHA-256 f82068db041076f0…

MALICIOUS

PDF

36.5 KB Created: 2020-10-16 00:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 05f40fcce123b08db517f556de696235 SHA-1: 41c8bd3dd32a2d3cc0b2e627520711ba39b19b69 SHA-256: f82068db041076f0d8cdde1c5086254ef549e531c8dec0545d1a1e0a085e61b5
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/pify?keyword=care+zone+app+for+android In PDF document text
    • https://site-1037022.mozfiles.com/files/1037022/vusegopawimexonolanowu.pdfIn PDF document text
    • https://site-1039783.mozfiles.com/files/1039783/29381842011.pdfIn PDF document text
    • https://site-1040129.mozfiles.com/files/1040129/21363399486.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/5473886.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/kezedivalo-bolumukejufufik.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/1003721.pdfIn PDF document text
    • https://vevejeda.weebly.com/uploads/1/3/0/7/130776099/9009541.pdfIn PDF document text
    • https://taxajadotediru.weebly.com/uploads/1/3/0/8/130873824/medore.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371261/normal_5f88bcdcca85b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368747/normal_5f88bf6fe036c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369645/normal_5f88bd2a9dfc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367914/normal_5f88b94cdb5a7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3525/7753/files/2010_honda_crosstour_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4130/3975/files/jelibebozijigarapebipewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9380/3679/files/vajerudabovoluwil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3522/6023/files/on3p_billy_goat_mount_point.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/282a34c7-a97f-4577-9809-5a35bccddbad/5069362940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63b7244d-013b-4a3a-80e6-523b01ac9194/39360746906.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/246be823-4702-4939-86d7-a3207f893d65/18080423434.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21b367e1-e551-4de9-b3f3-a62c414ea1b3/47352038214.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_off000052e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52E9 4780 bytes
SHA-256: 6c2ed7226ba7b7cc856d46dd6445629244f8d4d1010490ee3615d86d16897c80
font_01_sfnt_off0000633f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633F 9884 bytes
SHA-256: 7fab5bee61c5db1b1e1b18ad9c84deea7eef086dcbf25b54a45efdcc20fd17ce

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