Malicious PDF — malware analysis report

Static analysis result for SHA-256 cebed6aa2a4c7ae9…

MALICIOUS

PDF

36.0 KB Created: 2020-10-28 20:50:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bd4ee6d9cbba62659dedb7891e829c93 SHA-1: e6042a2c81d69771edff094c8d04a8e1a8f43a4e SHA-256: cebed6aa2a4c7ae95db36acbfbb33fc49e9de3b7fe0dd25c2ae8a2ebb81d9f1a
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to disposable hosting or redirector services. The primary redirector URL is https://ggtraff.ru/strik?keyword=swatch+watches+irony+v8+price, which is flagged as malicious. The document's structure and link farm behavior suggest it is used for SEO manipulation or to distribute further malicious content, rather than for its apparent document content.

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=swatch+watches+irony+v8+price In PDF document text
    • https://xopaluwejur.weebly.com/uploads/1/3/1/8/131857284/nuximukiluxosu-pidunudazivarif-kenalazomoxixe-kijewuz.pdfIn PDF document text
    • https://xanugobolenaz.weebly.com/uploads/1/3/4/3/134371028/af1204bb.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/xovejaxikufu_kosev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367964/normal_5f8e96f5dbad8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366647/normal_5f8752c43e0f9.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/6675268.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5f911ceba8218.pdfIn PDF document text
    • https://gurigibafex.weebly.com/uploads/1/3/0/7/130739571/jaroverewu_gugez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369311/normal_5f936aa62c035.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374537/normal_5f94788032575.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/b51dd28d-6a20-48a7-9da2-eca946c8d1ee/stitch_and_glue_boat_plans_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cff5ae4-d6f4-4187-b2ab-a44f14398b19/18236484196.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbb09ac1-b12d-443a-b886-2375ed61148c/dusakadutijumorubeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3239/5423/files/16920079297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4063/5542/files/cisco_linksys_router_e2500_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5209/5898/files/92533613134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9468/0764/files/19617730828.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d72ed913-9364-4902-9f42-36dddc738485/60925909770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7551/3749/files/jenakedi.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_off00004b17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B17 5540 bytes
SHA-256: b507e7a86adcb9129c003bcd13f6ea883e7a28655e90f647322270cb17b4e9af
font_01_sfnt_off00005e06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E06 10896 bytes
SHA-256: d47bc4772b22cb128aae66b597e9c43befb93a90797550aa1f3c6036a4683e02

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