Malicious PDF — malware analysis report

Static analysis result for SHA-256 a91fae1ecdcadda3…

MALICIOUS

PDF

67.7 KB Created: 2020-10-25 14:35:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 9ded72b59bb30218b737b3a8fba4afc4 SHA-1: a32adb31d282e78b943b8aae70753d646f297a44 SHA-256: a91fae1ecdcadda3bc8d45805f9c8df2d3dfba7d6cb9436883dea1d22be34eb8
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://ttraff.cc/123?keyword=nektar+panorama+p1+user+manual In PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/9507449.pdfIn PDF document text
    • https://jederatikepu.weebly.com/uploads/1/3/4/3/134370591/puvifajasu.pdfIn PDF document text
    • https://senobatupubem.weebly.com/uploads/1/3/1/4/131437889/d0b98e7b0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382196/normal_5f8e754b383ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366032/normal_5f870c17e0c65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374371/normal_5f893d051fbd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392463/normal_5f93fed254ab8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384483/normal_5f8fa49a5e55d.pdfIn PDF document text
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/552a91b0867dd.pdfIn PDF document text
    • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/sofunolofokex.pdfIn PDF document text
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/lupozatos.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/1/0428/2613/7756/files/soxolakipimofuzifuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2626/7291/files/android_browser_download_any_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3876/1109/files/96393041394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1229/1264/files/factory_settings_android_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aaeb015-6d47-4744-8311-c93baea5962e/nebivozerisidivaba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b23808a2-5069-4208-bb1c-a3f625951f52/stihl_034_av_super_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcaf57db-30cf-4fe4-87d5-7ba6118f221b/duracell_jump_starter_compressor_900_manual.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_off0000c52e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC52E 5052 bytes
SHA-256: 68cd728e6380c42c0ad5dcb0bbeade67c1efd00f14d00a0e9db033c95f95747e
font_01_sfnt_off0000d64d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD64D 13248 bytes
SHA-256: 871fa4819c861c5ad593127a8698084dbc3f322ffffb1593b3ffdf2876a164bd

Open this report in the interactive analyzer, or submit your own file for analysis.