Malicious PDF — malware analysis report

Static analysis result for SHA-256 335e27ce178793b5…

MALICIOUS

PDF

45.4 KB Created: 2020-10-16 12:09:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 17e643d4dc020f557edc7eb4a2af9361 SHA-1: 744f75f72d203da44ea5fc0e8ef0d3585b1edfed SHA-256: 335e27ce178793b531afd1b3b695e4fb247c2dc57113e92166ef0b466ff29af6
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=airbender+tamil+dubbed+hd+movie In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/wogiselaruto-nokage.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/roruj-fegedevovelere-zexomojikazi-rewubujelem.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/5677351.pdfIn PDF document text
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/xesikoxojakewude.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8980310.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373517/normal_5f88ed480030a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369495/normal_5f8885895ee7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368497/normal_5f88b05739c54.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/5647392.pdfIn PDF document text
    • https://pidofuvu.weebly.com/uploads/1/3/0/7/130739764/favonapiwosol-tokata-radebezori-gokobunabig.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/1441493.pdfIn PDF document text
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/nizikup_pedijekes_warozibeb.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/jixidused.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371536/normal_5f8882840656d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366359/normal_5f870e53dbae3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368222/normal_5f88bb74c196b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f872f0159e09.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfc4bf49-d16e-4b6b-a514-05fcdaf287ea/nifiworawimaxedate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8679df8c-973f-439e-b29b-2a60286f6560/pagawumaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98c73fbc-4e55-4058-aaf9-b32f6577d7ba/93843318490.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea7a4530-7d5a-4dd1-b638-36bbc5628fc9/94504111831.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0224944e-11a7-4ea1-9837-fb576f9cd65f/19748748624.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36c2f5e5-bcb9-4993-a655-2238752f6c55/56111060041.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/566db2a3-13a6-4452-ac52-f783422a7be0/mifozitexixuvozepa.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_off00006730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6730 3212 bytes
SHA-256: 748e1223d06d8ac717cd07391261dab2073868aa99be05a5f720895b2c6390de
font_01_sfnt_off000072b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B0 5076 bytes
SHA-256: 0990514652182563ffe6692c7a9ee3fada96815867aa2a5b4d7ee1029061980d
font_02_sfnt_off000083c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C2 10340 bytes
SHA-256: 5142de95ca0353df84f97ed4748d64a69ed301f080fdc36a83c46a043f273276