Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a56545411c21343…

MALICIOUS

PDF

44.2 KB Created: 2020-10-15 02:45:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1d39c9362d48174e079e39336bad3f4d SHA-1: 7eaf3cddf32138b2f99e3f0b07883099296282e1 SHA-256: 0a56545411c2134337224956ca983940f77c5f3f12d86c74e6c292651f0c20b4
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://gettraff.ru/123?keyword=bose+soundsport+in+ear+headphones+android+review In PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/3621861.pdfIn PDF document text
    • https://vurofagulomefu.weebly.com/uploads/1/3/1/4/131452840/tilabotazigutebade.pdfIn PDF document text
    • https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/1af1914ad0.pdfIn PDF document text
    • https://site-1041676.mozfiles.com/files/1041676/tabela_polegada_mm.pdfIn PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/4235942.pdfIn PDF document text
    • https://fadusoga.weebly.com/uploads/1/3/0/7/130739873/8580329.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365545/normal_5f876a3e5d31f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_5f877f19ae4e8.pdfIn PDF document text
    • https://pobezewimo.weebly.com/uploads/1/3/2/6/132681951/tizuf.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/mamegamipojebos.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/3532345.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/jogowezokuvaxu.pdfIn PDF document text
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/555881.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/b900d9732f233.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/xekena.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
    • 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_off0000600d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600D 5096 bytes
SHA-256: bd6daa8bab87cf408bee8e8780ad15779b81f17ef406af935faf7b509c7ee12c
font_01_sfnt_off00007163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7163 10572 bytes
SHA-256: 311242ddaae007681cfee89f221b03736fbf54cf667c47c55a02494de48b5661
font_02_sfnt_off00009583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9583 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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