Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a3ac825d9f72d7c…

MALICIOUS

PDF

48.4 KB Created: 2020-11-08 18:47:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 6130f83d23dcb5985472120e4f4ef934 SHA-1: 701aa88df43604a195d85d7ff8826fe5cd733a87 SHA-256: 7a3ac825d9f72d7c36dce170fe05ca533736365ce98d5b68fa84d8d78cbb5a07
132 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/123?keyword=florida+civics+eoc+study+guide+7th+grade In PDF document text
    • https://rowurasivove.weebly.com/uploads/1/3/4/3/134357219/827568.pdfIn PDF document text
    • https://viwawisigox.weebly.com/uploads/1/3/4/3/134342504/xalizo.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/jibigamefomoni.pdfIn PDF document text
    • https://gepobuxew.weebly.com/uploads/1/3/1/0/131070920/7489933.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/tidivobinimigip-banez-batipafon.pdfIn PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/gaxukegudo-jexipageburujof.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://uploads.strikinglycdn.com/files/d7205833-d8ec-43ab-b0fc-1fbfd21a3b3f/23864499758.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4ed1447-2871-48dc-9fd9-ba20db7202cc/55436994963.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/16597892047.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/mejokonofafobaxoj.pdfIn PDF document text
    • https://pupirod.files.wordpress.com/2020/11/sagob.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/wolf_kfm_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3606e32-d894-4ebd-ac82-5f6f7c1ebb2e/51693818205.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11c59514-78e1-4d3f-8bbd-527baebe2eaf/ferevuponorovuposa.pdfIn PDF document text
    • https://zivumiji.files.wordpress.com/2020/11/zugedusuxawajogik.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/imperialismo_na_frica.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/gangster_mafia_contract_wars_unblocked.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_off00006d85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D85 5172 bytes
SHA-256: 32f4d290ba4b68f8758a4e7c0f11ee598018f1fe45708be9f23f26902d7952b2
font_01_sfnt_off00007f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F48 11756 bytes
SHA-256: 6fec45d8270ad6892d74cea8f93affc347f7611bc7a15c924fd042166f418704
font_02_sfnt_off0000a691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA691 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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