Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbe8a97c4bdb566b…

MALICIOUS

PDF

43.4 KB Created: 2020-10-20 00:23:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 37d979377e858be04c8c9ee1ed615705 SHA-1: 6221cd695e23f91e3982c5f8ad63affe44fc4102 SHA-256: dbe8a97c4bdb566b9c85bdf43b4a1e8253d262fbd634c922024f201301b5d363
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.link/pify?keyword=story+driven+games+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380882/normal_5f8e00b4e09d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369318/normal_5f8bdbc2dd189.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371240/normal_5f889a80b24d6.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/abef22d064547.pdfIn PDF document text
    • https://nubojubixuxo.weebly.com/uploads/1/3/1/4/131410311/sabibuwumelo.pdfIn PDF document text
    • https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/buvipulezu_gosoguj.pdfIn PDF document text
    • https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/xolek-telunux.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/jiniz_ninotowekarexi_buwim.pdfIn PDF document text
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/4263667.pdfIn PDF document text
    • https://nipaxibovaj.weebly.com/uploads/1/3/1/3/131379211/5ed7cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f8749953c8f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368245/normal_5f8821990f3b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366949/normal_5f8cabf1db8a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f88b1f339155.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367674/normal_5f8c0a5179b26.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/8d7082c4-4812-41d2-ab18-220a6202b6e0/belebetominevito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f35025a-3766-4848-8b11-c5b0e44a3cb1/pozovifutevubugupugoko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f172ac2-dfd7-4b95-aac2-1c9f992f0c87/86353970176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6262/4405/files/25598425137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/8315/7670/files/17242114877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6810/2558/files/jekiruram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6080/4770/files/2020_honda_ridgeline_tonneau_cover_installation_instructions.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_off00006a95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A95 5380 bytes
SHA-256: cfefd4f6a767611fe884b6871dcd7becadc5008994b1642245103ace91e6542c
font_01_sfnt_off00007cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD2 10428 bytes
SHA-256: 9d4abf2a021b2597613dc378b92b27ae6601b61d3c7ade4605aec13c9ac0c03f

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