Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8aeddc55296847b…

MALICIOUS

PDF

34.3 KB Created: 2020-11-05 18:05:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 4c1f2737b79057d12a1519a47623ac99 SHA-1: 4a3975eb5522a771ca81444e094a9eef18a08270 SHA-256: d8aeddc55296847b54252276fb54cbf56fe7596df483e75e97f82e7512dff941
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=beretta+nano+guide+rod PDF link annotation
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/sosepazikodo-tolakilapagapoz-xuzukunixi.pdfIn PDF document text
    • https://pafudufuwod.weebly.com/uploads/1/3/4/3/134326080/7517592.pdfIn PDF document text
    • https://komavumi.weebly.com/uploads/1/3/0/7/130738531/dositez-naxedur-lomumetebat-xemokapilon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416919/normal_5fa3f26ca02a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392649/normal_5f8fa681a3ab1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411273/normal_5f9739841abc1.pdfIn PDF document text
    • https://nagopajasire.weebly.com/uploads/1/3/4/3/134311949/dulaxusuvelupubi.pdfIn PDF document text
    • https://jatilesaza.weebly.com/uploads/1/3/4/3/134316516/3f697046.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/rizezobabub/duguligofibotarujubojen.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/siligizunuzerejit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f08617d4-bd90-49c8-8033-f8c262747373/janome_15000_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/baptist_beliefs_and_practices.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F45 4712 bytes
SHA-256: 39b0877fdf6c5898c4c5ea3f8a614d3ce1faac22a2a4cbd184775c0d30b2445d
font_01_sfnt_off00004f4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F4F 9100 bytes
SHA-256: 19a4683e2306df96c1fd239e5b9899f4171e76cb7998c1e933cfe56b4b34df10
font_02_sfnt_off00006e7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7F 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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