Malicious PDF — malware analysis report

Static analysis result for SHA-256 8486dcdef246a51b…

MALICIOUS

PDF

44.8 KB Created: 2020-11-09 16:11:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fde293e3f3668a9c8bb86797c6d20625 SHA-1: 163aa682ede66016af3c14d4c50809b2c80446c3 SHA-256: 8486dcdef246a51bbc7481433d87c843631a91bfb93fb35575d100770b79c722
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://traffking.ru/aws?keyword=prince+harry+sone PDF link annotation
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/89bc2d1ae.pdfIn PDF document text
    • https://mizunilido.weebly.com/uploads/1/3/4/3/134352057/dulufatid.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/6531157.pdfIn PDF document text
    • https://tamagokevalagir.weebly.com/uploads/1/3/0/7/130776783/3333017.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386606/normal_5fa31f711cb15.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/3168810.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/218271ef-dc35-45ff-9c8b-49a945035798/23549057343.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/gas_garena_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/lukil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34bdea08-c55b-47f9-9d83-2fccdf1f73ad/gupisivesobuxusikuvuxiwig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/739408a0-efc2-4db5-bce8-7cab5650621f/vopumerujumimigefuzamu.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/many_word_whizzle_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/10881207049.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/bootstrap_4_cheat_sheet_classes_list_reference.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_off00007189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7189 4960 bytes
SHA-256: 6b5814aeeb436694de8aaa5a2b269eafbca31aa7362cac077a9d3122fece3c5a
font_01_sfnt_off0000826a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x826A 10548 bytes
SHA-256: 73ba7eb1ff717818fa6fe9806fe10993af2b9838779ef3f3ab2673702827d653