Malicious PDF — malware analysis report

Static analysis result for SHA-256 50566cef68d9f71d…

MALICIOUS

PDF

72.3 KB Created: 2020-10-10 23:33:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: ce2718596360dd8321fa2ee41b8f0970 SHA-1: 66d8264bdb169028d62969ec7fa1cb22bf686a31 SHA-256: 50566cef68d9f71dcec76a9130646a37a400e98030183c8fb146ffbf411f72b1
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://ggtraff.ru/strik?keyword=%25D9%2583%25D9%258A%25D9%2581%25D9%258A%25D8%25A9+%25D9%2581%25D8%25AA%25D8%25AD+%25D9%2585%25D9%2584%25D9%2581%25D8%25A7%25D8%25AA+upk In PDF document text
    • https://site-1037854.mozfiles.com/files/1037854/wasenorolokidefejavelu.pdfIn PDF document text
    • https://site-1036730.mozfiles.com/files/1036730/28386057282.pdfIn PDF document text
    • https://site-1039503.mozfiles.com/files/1039503/80935715327.pdfIn PDF document text
    • https://site-1042725.mozfiles.com/files/1042725/87658728240.pdfIn PDF document text
    • http://files.puttmc.com/uploads/1/3/1/4/131407274/pudukafer.pdfIn PDF document text
    • http://files.mrpersonality.ie/uploads/1/3/1/4/131437833/sowejabuluse-jugakekir.pdfIn PDF document text
    • http://files.edhsbands.com/uploads/1/3/2/8/132815748/3701088.pdfIn PDF document text
    • https://site-1037241.mozfiles.com/files/1037241/nosarugevilukujiv.pdfIn PDF document text
    • https://site-1039398.mozfiles.com/files/1039398/xewudizazixa.pdfIn PDF document text
    • https://site-1037135.mozfiles.com/files/1037135/tafogotifowuzanifigevizo.pdfIn PDF document text
    • https://site-1036985.mozfiles.com/files/1036985/witad.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/c0b8a6b5-b494-444f-9b3d-d8ab3a5bc25e/rawuxiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34c9c696-09a2-4b54-86ef-33db1ef58e71/73107806453.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a226057-6dcc-46b7-9c61-a343fab42337/fomebawitenoso.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000cbd8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xCBD8 32088 bytes
SHA-256: ac10441dd54093e09caf1c5cba9b2e78ef464fd3fac1f7a522e8aee5b5e94f11
font_00_sfnt_off000086c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C5 3684 bytes
SHA-256: 5c1444bd1c30d3d7a68940e330225ea7904fe83c400781a29f4778626f8d2cc0
font_01_sfnt_off00009320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9320 17464 bytes
SHA-256: 04eb456c62dd37e2dfe03fb346e16ea7d041af4ddbb63bd7e9293e210ee496a3
font_02_sfnt_off0000acfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACFB 8968 bytes
SHA-256: 2aab5609dc9636c17eaba7048ee5ef6833fc59aa25d805ec09c90fca0f881ff2
font_04_sfnt_off00010364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10364 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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