Malicious PDF — malware analysis report

Static analysis result for SHA-256 7164fbfc3b8c5a1f…

MALICIOUS

PDF

36.4 KB Created: 2020-11-09 12:57:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 521fb5d51a813918d61cc780ab0c388b SHA-1: 26579a93bacd3d517130a87719cf660ba7565d91 SHA-256: 7164fbfc3b8c5a1f54f845d8bf015e0b1b20ade7467d8d5c8ed908caa9450715
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafffi.ru/123?keyword=roadmaster+granite+peak+24+bike+manual PDF link annotation
    • https://xaxaguxoludu.weebly.com/uploads/1/3/4/5/134519627/2641778.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_5f87b81fd3b1c.pdfIn PDF document text
    • https://zafitageleg.weebly.com/uploads/1/3/4/4/134489703/jukatanod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f8f0815a34f9.pdfIn PDF document text
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/32eee4b9.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/727149.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/3257372.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459777/normal_5fa15fa4ba9b6.pdfIn PDF document text
    • https://xawuwotogot.weebly.com/uploads/1/3/2/6/132695388/5434015.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f8cf69bcb10b.pdfIn PDF document text
    • https://likoxijisopo.weebly.com/uploads/1/3/4/4/134460370/6536690.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/kafififinariwovonopejop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e097bf58-b60d-40d7-96a6-804b117e4f15/47816491391.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/hacks_for_vlogger_go_viral.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_off00004ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EA6 5712 bytes
SHA-256: 16ad978120555593c2bf4488050c575c7e8c999e12ec044bf97639715a65d650
font_01_sfnt_off00006210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6210 10136 bytes
SHA-256: 4a72c4b9b243797738cbea9ad2656377e589890884fa38b46093bd0e23c73bc2