Malicious PDF — malware analysis report

Static analysis result for SHA-256 15bed9374f2a1381…

MALICIOUS

PDF

52.9 KB Created: 2020-10-18 03:08:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 45933e605b3cba07622990fa95d62379 SHA-1: fc34655d279f76319d0fed7a36065c3d7868c617 SHA-256: 15bed9374f2a1381f5e964dfe9ac558d0502813e9728d89998990466873173ba
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=minecraft+t%25C3%25BCm+s%25C3%25BCr%25C3%25BCmler+indir+%25C3%25BCcretsiz In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f86ff84e90cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f8b5c308c20a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366364/normal_5f87546540431.pdfIn PDF document text
    • https://fewevivib.weebly.com/uploads/1/3/0/8/130813821/vititobiwisib.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/2c169f6c3cb6a.pdfIn PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/dd9b521.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/8768087.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7d3707d5d.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/jadixirutoxe.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/4923221.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/77bc9792-b1da-4d80-b1c4-21f93c18fa3d/30440730030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8854824-d782-45e8-a594-b1757533690b/tefetuvarufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/660757d8-bab0-4117-96bb-3b8f1e722dc4/87873477586.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db038c0c-bbb6-4a4e-8ffb-468ecd3a31e1/gosibip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ca4c9ff-df8e-4653-a26f-bb4021d6df4a/40311724452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/dremel_chainsaw_sharpener_kit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5916/2521/files/latitude_e5400_cto_base.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9321/2318/files/android_version_updates_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9300/9604/files/hawaiian_lei_coloring_pages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/5437/2261/files/bixby_home_apk_sammobile.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_off00008aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AEE 5344 bytes
SHA-256: e7642a2ec3bd38bd35c5304fa18f871af3c8fa8332d9ebbd7dee627ed4eb202f
font_01_sfnt_off00009cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD6 12208 bytes
SHA-256: 1bf97b2f4ce145a06e8da8a83febb46f0b1a276cc95a35056f515bb2e22cea6b

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