Malicious PDF — malware analysis report

Static analysis result for SHA-256 89e4725a160b3b77…

MALICIOUS

PDF

79.9 KB Created: 2020-10-31 04:31:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c9a854d5cde755c3467d65388b3ccaa5 SHA-1: ea7b76b6acaf36b2960aec52d4d3c6b7b6cbdfff SHA-256: 89e4725a160b3b77f5c88245ae3211190dfb3068288963a3eb6be75f2375c677
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.link/123?keyword=two+step+cluster+analysis+spss+output+interpretation In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387052/normal_5f97ace4a68f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_5f88484911585.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379053/normal_5f92f2931b6f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377410/normal_5f9c4937c0c3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427104/normal_5f9c3f9115f5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f9148d9ec8ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376854/normal_5f8a98c17dede.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367919/normal_5f877b60858a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367273/normal_5f963905b5f73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376600/normal_5f9cb5d55bcb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375087/normal_5f980f3eb21d2.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/fddceff5-e63f-48bc-9cfd-18e83b0f5cb5/lugilitegad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6562/0672/files/56706573907.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34d89fce-98e2-4886-9755-b11cd81e4439/454_firing_order.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aa5f66a-0a62-41eb-aefb-ca4c63f8c1a4/jinuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9857/3474/files/93373911809.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a633d96f-3689-42f1-b798-097c40737ecb/life_wheel_blueprint_ragnarok_mobile.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEC 3016 bytes
SHA-256: 58d72bf77caf06f196ded4b34c89bed61a9c4a6ede306bb0efd38173e7a75772
font_01_sfnt_off0000f9a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A4 5072 bytes
SHA-256: 6920de02df17ffa5fecef5ab1d08c3c02ded5debd84dbed4ca24965746530a77
font_02_sfnt_off00010b09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B09 11216 bytes
SHA-256: 61f0218db754b4c9cd2f96d0e94233f748b82a932851fd105ac52bdbbf509bb6

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