Malicious PDF — malware analysis report

Static analysis result for SHA-256 755dc75a952e65af…

MALICIOUS

PDF

40.6 KB Created: 2020-10-28 00:06:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 5496cf3ad61f0c12f38e917275e4fe8a SHA-1: 4604950a7716b2f626ce766b0bbef628d7b52c7f SHA-256: 755dc75a952e65af1f052eee060e871cd7090517da5f7586bec51401eba8bd02
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/pify?keyword=mathcounts+handbook+2018+2019+solutions+pdf In PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/runemevurexuziwone.pdfIn PDF document text
    • https://sixodajumam.weebly.com/uploads/1/3/4/3/134311071/8407012.pdfIn PDF document text
    • https://dedeluruxizo.weebly.com/uploads/1/3/4/3/134305162/8460759.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/rotizizalipi-xulejowo-wegevok-xutijub.pdfIn PDF document text
    • https://pewovorawegoxuv.weebly.com/uploads/1/3/4/3/134351704/nunematutene.pdfIn PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/kevokifisosasa.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/gevoderovepiru.pdfIn PDF document text
    • https://nazivuwe.weebly.com/uploads/1/3/4/4/134452961/57ffe2995346.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/5b9fb40.pdfIn PDF document text
    • https://zibeselev.weebly.com/uploads/1/3/4/1/134131471/fd412ac71ad7ace.pdfIn PDF document text
    • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/658e3622f03381.pdfIn PDF document text
    • https://biwefixosepow.weebly.com/uploads/1/3/4/3/134334309/bemitumezutomejez.pdfIn PDF document text
    • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/gevinowodago_senomonowolu_fetimapuv_sudewemilu.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005c9e.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005c9e.bin)
    • https://cdn.shopify.com/s/files/1/0491/8765/1750/files/76545459665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0314/9479/files/chrome_download_failed_network_error.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1132/6119/files/divine_right_definition_canada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0366/5822/files/172_cm_in_inches.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaadc9be-d06b-4534-9cf4-e0657617859b/gadulasivero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86f456d2-006f-4c31-be51-9a282fd838cd/66700433555.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 extracted file (font_00_sfnt_off00005c9e.bin)

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9E 6032 bytes
SHA-256: 87367cb5bd3e1febd328edd8d0e8fe116002f4c079ac2b815fee0a6deb2d3cf5
font_01_sfnt_off0000711a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x711A 10424 bytes
SHA-256: 8b4c22e4c9b9d6dcfdcc916c483f263bc6b54d0e5a565ab126bee81b347b3a0e

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