Malicious PDF — malware analysis report

Static analysis result for SHA-256 11854ec6e65ad710…

MALICIOUS

PDF

50.8 KB Created: 2020-10-25 11:28:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7d88a23e7e5f16ae982e0b3111441a81 SHA-1: 2e092e0588165a38a2066e3cdb400493999f7916 SHA-256: 11854ec6e65ad710fc3a26e36cd06f5fde4adbff6d92778a4c0b42db20194bb2
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/aws?keyword=behavior+monitoring+chart+pdf In PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/ferulefigujebovepa.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/7d46b792d6.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/a1d0b0c.pdfIn PDF document text
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/xavumomole.pdfIn PDF document text
    • https://fupefasupemeze.weebly.com/uploads/1/3/4/3/134315788/cf8e1839ab1a.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/3408347.pdfIn PDF document text
    • https://gemenudotipetal.weebly.com/uploads/1/3/2/6/132695720/2957024.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403262/normal_5f921330e3227.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370547/normal_5f8bdc553a628.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/1/0481/7715/2151/files/jaguar_xe_manual_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5322/3588/files/borefuluzisiwaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8750/4583/files/dosorajesezalixoxujemis.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/alphabet_militaire_international.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/91246477547.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/radicales_libres_y_envejecimiento.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03bfdf4e-d7a4-4871-9225-a562e81ad942/damobupamavozevofakodig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a7abfa9-750b-4c3f-81b2-9c5751f2a74b/76013800908.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dddb1b0a-d40a-41d3-b8a1-84f871df469c/96622403876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9accac0f-80c7-499a-8790-868bcaeb3202/37164635652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df19d563-a27f-4a52-afaa-96fc72f32739/18845567657.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_off000086bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86BC 5468 bytes
SHA-256: 7e17296039a9b3c27a05815399753b2dc9f42bde1266b89fee8a4a19f09dee29
font_01_sfnt_off00009938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9938 10716 bytes
SHA-256: 9bc578456ff5528385b94f1608896b13a7212590b78cf4e44596046af6f1a7d4

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