Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aaca8b5616f9e21…

MALICIOUS

PDF

45.9 KB Created: 2020-10-03 08:10:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 02b523d88caacc77634d3e038f5b8ffc SHA-1: fe5a6cbeefadf168b071cb4122123a3d9ec9a27e SHA-256: 1aaca8b5616f9e216a213b47cbc485c5c690ff9b853026d9ef5419fce3594d93
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://ggtraff.ru/strik?keyword=eben+alexander+proof+of+heaven+pdf In PDF document text
    • http://rorezuvim.fancyshmancynotes.com/uploads/1/3/0/7/130739640/zanatu.pdfIn PDF document text
    • http://rusex.wardmelvilleice.com/uploads/1/3/0/8/130874379/sirupileterato-wawivejenu-rusegozuremub.pdfIn PDF document text
    • http://files.willbrosco.com/uploads/1/3/1/6/131607522/5534202.pdfIn PDF document text
    • http://files.bethelparkfarmersmarket.com/uploads/1/3/0/7/130775606/5202704.pdfIn PDF document text
    • http://tuzawosub.magdasita.studio/uploads/1/3/1/1/131164067/xavasak-sigerolaledupum-ruwuretajaje.pdfIn PDF document text
    • http://negal.drjenniferawe.com/uploads/1/3/1/4/131438500/f16dfb010.pdfIn PDF document text
    • http://nalej.trilloquy.org/uploads/1/3/0/8/130814229/16e701.pdfIn PDF document text
    • http://files.stellarstops.com/uploads/1/3/0/7/130738635/04350.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/1/0427/5725/9420/files/taco_5000_mixing_valve_rebuild_kit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8876/7901/files/gexukijita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/1645/5845/files/68771073395.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a9e4d78-71c4-4e9f-b5b0-370f97e73065/82975934124.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/429c1663-275b-4f1f-95b7-dd441610193a/kufefezaxuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be864cd7-0724-432d-9839-210c34058811/bopenofejateligurelizoxem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73e6c76d-be20-46a7-9465-46c6b0be485f/furewo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04a637da-71a1-412f-b6d1-8b9548d714b5/vufozogojiladim.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_off00007680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7680 5176 bytes
SHA-256: 89b6c6b13fd2dfec75f75ee68a2da204944cd8952f6bfea1a8e02ea805b5c3d3
font_01_sfnt_off0000881a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x881A 10204 bytes
SHA-256: e0692844312524765172f65d05b37e91449e82c7b44e0ef4aadb17c38b5c6449

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