Malicious PDF — malware analysis report

Static analysis result for SHA-256 709ebb10f46af370…

MALICIOUS

PDF

40.5 KB Created: 2020-10-09 09:23:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 721ee42278a964a4105acaf000555a5d SHA-1: 7ab4353680948c544b261161afc8e2bb895f1050 SHA-256: 709ebb10f46af3703b75b1a1820ef0a9acded557ee5a8305141eba6f3bb7da57
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=hinos+ccb+hinario+5+cifrados+para+vi In PDF document text
    • http://lunig.barebonesstudiox.com/uploads/1/3/0/7/130740265/vuvaparopa.pdfIn PDF document text
    • http://files.iwvgaducks.com/uploads/1/3/1/6/131637419/4271915.pdfIn PDF document text
    • http://balolesuz.silverstreamfalls.co.nz/uploads/1/3/1/6/131606279/sejofojadinivu_kafolejami_menowivededo_vifawikugemexup.pdfIn PDF document text
    • http://files.retrogunx.com/uploads/1/3/2/7/132710592/sadupofi-gadorusigis.pdfIn PDF document text
    • http://sawim.getadvancedchiropractic.com/uploads/1/3/1/6/131606402/6254e.pdfIn PDF document text
    • http://files.doloreswhelanswimming.com/uploads/1/3/0/7/130776891/selegemuw.pdfIn PDF document text
    • http://files.aadvantagebusinessopportunity.com/uploads/1/3/0/7/130739704/83abd3f9a2e4.pdfIn PDF document text
    • http://files.999fmradiomanila.com/uploads/1/3/0/9/130969436/nerozilepakuwanuger.pdfIn PDF document text
    • http://gevibew.johnrosseconomics.com/uploads/1/3/0/7/130775545/9588550.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://cdn.shopify.com/s/files/1/0499/8332/4320/files/plate_tectonics_crossword_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9811/5737/files/timex_nature_sounds_alarm_clock_manual_t621t.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6462/5825/files/red_guard_star_wars_costume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1952d091-e561-4bf3-a297-b9d6e5bf82c5/38249925168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e08cdd4c-1004-4727-ba37-a3f106b45a00/13235358856.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/752aa4e2-6b6e-4be6-bcfd-0d9f4dd8c1cf/zuligijopomogifov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c7dd2b5-12f0-4263-912a-04055cddb9f9/83983172103.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_off00005162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5162 5084 bytes
SHA-256: c7672681b6ff5562cfcbe3342c4d529e548ac179452918933fffbe56323d97d7
font_01_sfnt_off0000628c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628C 11272 bytes
SHA-256: 2429bfac8424418eafaba0428440191d1d7387ef9d7eea66cf79a042a689e6e7
font_02_sfnt_off0000870c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x870C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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