Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8cad4e8a289ef3…

MALICIOUS

PDF

59.9 KB Created: 2020-10-14 20:44:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 8625e1b734a848cac791e3002eb0ada0 SHA-1: 09f9eb2317a6ec44265dbf093886f8f28ebf0ec7 SHA-256: aa8cad4e8a289ef369534737401e16c9b1631e26cfb1a8a9f363943fd7a1930c
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=ionic+cordova+platform+add+android+not+working In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f87109de89d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f86ffaf4a678.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f870519b7469.pdfIn PDF document text
    • https://site-1043246.mozfiles.com/files/1043246/86553394526.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_5f8701ede58e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f87124b0685b.pdfIn PDF document text
    • https://site-1038618.mozfiles.com/files/1038618/luwal.pdfIn PDF document text
    • https://site-1043200.mozfiles.com/files/1043200/76630511654.pdfIn PDF document text
    • https://site-1039350.mozfiles.com/files/1039350/16960004834.pdfIn PDF document text
    • https://site-1040509.mozfiles.com/files/1040509/xidisesozubirasezir.pdfIn PDF document text
    • https://site-1036746.mozfiles.com/files/1036746/wemesijuzenufuzobep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f870381c14a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f86f444355d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f86f55b88393.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/wirexanusir.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/zonibopiwesi.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/kurufe_devomikata.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a19d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA19D 5452 bytes
SHA-256: 94e43f1a4a9ca0efe893142b8fcaf4f6eee32dd5a708e487976f54610ff895bb
font_01_sfnt_off0000b429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB429 14688 bytes
SHA-256: c79f9c67aed2d67eb80052ee54d4756e538c5f9a3e1e2d147192a80c53d4a2b3

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