Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d7c0e5fb19e7422…

MALICIOUS

PDF

45.8 KB Created: 2020-10-18 01:31:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1b5ebf848a99164b61d544ec5682bc53 SHA-1: b74624cea6e966cf75c5106e24586b6717582023 SHA-256: 9d7c0e5fb19e742236f3581da6aa6c764a1623d59f76593ab35a5149290f3569
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/strik?keyword=elkay+swirlflo+drinking+fountain+troubleshooting In PDF document text
    • https://tejigenunonim.weebly.com/uploads/1/3/0/8/130813632/xebopuviban.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/4047785.pdfIn PDF document text
    • https://ribafiligizeki.weebly.com/uploads/1/3/1/4/131438260/futuden.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/bupemigimamuvap.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
    • https://uploads.strikinglycdn.com/files/5f75e2b5-5834-4472-9008-0002073ce7ee/pazusoxesutogajopu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/373242ce-6d78-45ff-9ce4-03aa9d303c45/95324946088.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b76a4b61-509f-4dad-9330-f758d53a9971/tegupekipuxobofewofot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0412/4571/files/ohio_basement_systems_cost.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4571/4582/files/tv_satelital_gratis_amazonas_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9399/2640/files/elmbrook_school_district_news.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/9549/8392/files/nujubuvevusetijibeviduf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4764/8406/files/my_boy_apk_full_version_download_for_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4432/1945/files/algebra_2_matrix_operations_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8575/0976/files/vupodutunujimox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeea85bd-2ab2-4f1c-a839-9deb0f2ca24f/13788227922.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a552e4d8-e9a3-4ff4-be47-2766afa55bb3/simafukosate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/683d0ddb-2ddb-415c-95a3-99ad52d2d400/78390639807.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b77736a-c944-4037-a813-1a2595c88fe4/51633981318.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/060061eb-5924-4f70-b07d-549927d09c92/72606766077.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f707e14d-349b-4321-875b-ef6dd586c6c2/detawugesolezefexitiwafaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e319070-e6ea-40a2-ad87-459c61fefd9c/bisex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff6d84df-b196-4c08-9a25-13e26103809b/23481066754.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6789 5404 bytes
SHA-256: 8ee280878b24915efb56afcc4a41a4c276bce3d3f81c783107c2c592eeb30032
font_01_sfnt_off000079f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F5 9808 bytes
SHA-256: 699c28fbbd72439e743fe63f5b1347fbbf5ce0e98636ee63c131a8b035ff68d3
font_02_sfnt_off00009b7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B7A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3