Malicious PDF — malware analysis report

Static analysis result for SHA-256 5528632f33cb4532…

MALICIOUS

PDF

33.7 KB Created: 2020-10-07 20:49:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 620dbd9ff9de785e5769d0df0fcc5369 SHA-1: 18a59d81036f1f30c39c7970d261649988056e21 SHA-256: 5528632f33cb45322b377bea04a1d5c61a66e64c7387df4374f1ce3187ab8993
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=candombe+de+mucho+palo+partitura+pdf In PDF document text
    • http://files.blindpartsonlineaustralia.com.au/uploads/1/3/0/7/130738639/diwavinedifab.pdfIn PDF document text
    • http://tobomefi.transformationplayground.com/uploads/1/3/0/8/130813108/537847e1f.pdfIn PDF document text
    • http://pixivarej.jackiedennison.com/uploads/1/3/0/9/130969300/09bba4cd1.pdfIn PDF document text
    • http://potufox.sachkiretkaur.com/uploads/1/3/1/4/131411806/dekovix-zedidudawe.pdfIn PDF document text
    • http://files.sherricornett.com/uploads/1/3/0/7/130740221/wilubinapob-jagipa.pdfIn PDF document text
    • http://kulak.roundupforautism.org/uploads/1/3/1/6/131606066/09ed218808.pdfIn PDF document text
    • http://files.winzerlodges.eu/uploads/1/3/1/3/131381605/namusabawelelalebine.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/f35acfb6-e626-47f2-b513-fff0bbbf0f42/mogugor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ff4a2c6-ee68-49b7-8a27-8e856983912d/39638207293.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fda7bf54-5b4f-403a-a474-fa13775ce52c/49573750546.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c3def3e-55de-4d08-b589-3c17d94633e0/60666962132.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8562b442-35c4-4774-b5f6-8f8dbdc23404/legosusavizuresisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6239/4021/files/mewefugobamadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0754/9338/files/gta_vice_city_apk_download_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/maytag_gemini_double_oven_parts_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6129/4757/files/8932204989.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

Related samples 7

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_off00004592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4592 5260 bytes
SHA-256: 3a1b379402f8f073222369506defcfb547522ad5d45d02378d19bf11af65f63d
font_01_sfnt_off00005740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5740 9856 bytes
SHA-256: 430ec6df8bda0f011dafc70355b1b33646a046cbc3291285935337e255f88656

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