Malicious PDF — malware analysis report

Static analysis result for SHA-256 dac0462d1cb3974a…

MALICIOUS

PDF

50.1 KB Created: 2020-10-25 05:06:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-20
MD5: 40609615788ecbc608020097289edebd SHA-1: 893ff59827a77014a1a3649afa533144c11b34f9 SHA-256: dac0462d1cb3974a84460ca80e5fa79ade95a152e40593a28fd9aa1161d7d076
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://ttraff.me/123?keyword=manual+dexterity+board+games In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f8da415e83fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f8727769ab8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369190/normal_5f8892b247d55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369305/normal_5f89262f4d1ad.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/mewadogeguwafi.pdfIn PDF document text
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/potot-kuvexejoxis.pdfIn PDF document text
    • https://rojusonevupa.weebly.com/uploads/1/3/0/8/130814232/239cd.pdfIn PDF document text
    • https://xijoxamapapi.weebly.com/uploads/1/3/4/3/134337958/gakigeba.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/4823779.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8309/3910/files/joniravefunetawake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0956/3035/files/mr_coffee_jwx27_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddeeaf25-aadb-4667-af5d-6bd171ecedc5/belunamuxadisujuvuwe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/decf3ab9-0dbd-490b-89e9-7333329f1cc6/thirsty_lion_pub_nutrition_informati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/4352/2213/files/sketch_notes_rubric.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5411/8550/files/41886578638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5289/8739/files/international_journal_of_breast_cancer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0623/2229/files/nazefugegubamixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2969/9482/files/triangular_pyramid_volume_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/305c0960-05e7-4c85-81bc-cbaaeadccb1a/xosorafijila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dbaf9b4-ae2d-47dc-b19e-a9f563f6378e/ruxivonimiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2498eb18-8bed-41f0-bcc3-b341ef159dc0/pioneer_mosfet_50wx4_instruction_man.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12af0277-1be3-41ab-ac5d-fd256a9d34d6/westwood_t1200_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/399dc244-36fc-40a6-b766-45f29fdeab12/1301601234.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8373 5460 bytes
SHA-256: b4dc070aab123441f62533c12811a7add76606cc85f9d9373f32467a085dce83
font_01_sfnt_off00009611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9611 10744 bytes
SHA-256: 0fdf8b90c7e3af885ce1848c4eb03ecca22627820ef01fca1257f32cb349af13

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