Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2e8317b0f6fed2c…

MALICIOUS

PDF

38.9 KB Created: 2020-09-30 19:46:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: a05253b927cc206aeb49cc9c10ef5c26 SHA-1: 7ccb9ff7c3d71ccd76f351525a92e74aaf928d61 SHA-256: a2e8317b0f6fed2c05b43786bf9bd5c6a7647a6f972fa6c6c44f8647bf4a0bcd
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://ggtraff.ru/strik?keyword=canulas+orofaringeas+pdf In PDF document text
    • http://sopotiwu.homeprojectmilwaukee.org/uploads/1/3/2/7/132710797/3eb162b9119.pdfIn PDF document text
    • http://fuweju.relasonship.com/uploads/1/3/1/6/131607163/dodiwum-fokugikenola-rutarek-ripediwo.pdfIn PDF document text
    • http://girofiro.thelearningvine.org/uploads/1/3/1/6/131637814/778e9b.pdfIn PDF document text
    • http://files.stelizabethrap.com/uploads/1/3/0/7/130739153/6115830.pdfIn PDF document text
    • https://site-1036848.mozfiles.com/files/1036848/tafimavezapamerag.pdfIn PDF document text
    • https://site-1037086.mozfiles.com/files/1037086/vejekelijepole.pdfIn PDF document text
    • https://site-1038861.mozfiles.com/files/1038861/62646061682.pdfIn PDF document text
    • https://site-1037214.mozfiles.com/files/1037214/zekifabededalipagivo.pdfIn PDF document text
    • https://site-1037018.mozfiles.com/files/1037018/vuliguwedofow.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/44ef66dd-f84f-4cb3-8f9b-d9f765b8c101/40617613644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cb81377-fcdc-4d1e-872f-9a83fbe359fd/10801541092.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49f3ec9b-79a7-4de9-97c6-f713dd0eebe5/24012780206.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc0e0804-c1ab-49e1-bb05-2e22f9cec664/96536903661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5491/4981/files/aafp_feline_anesthesia_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6256/5795/files/adobe_acrobat_dc_reader_pour_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/0385/9103/files/19231584207.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 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_off000059f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59F7 5112 bytes
SHA-256: 3ab3bce8bf4202ce6830045fc2aaa99a9ac0edb15d6608c899f7f5b6d96c4eac
font_01_sfnt_off00006b66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B66 10564 bytes
SHA-256: c3d35760b6ecea64624df21c25187b128a5c5d12e7c0318247453ba164dfcad4

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