Malicious PDF — malware analysis report

Static analysis result for SHA-256 601558be51538bfc…

MALICIOUS

PDF

42.3 KB Created: 2020-11-04 06:05:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: de04de54d4157d6c3741aa97c2938ed1 SHA-1: 9c56887564bf3d2fc28e62c9b39612f9e51dd800 SHA-256: 601558be51538bfcecb33fc147a8fbd9a2e5706ae660b3fcdc54f8512901115b
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document functions as a link farm, embedding numerous URLs that lead to potentially malicious redirectors and other hosted PDFs. The document body, though partially obfuscated, contains keywords related to 'Fiesta online leveling guide' and includes URLs that are flagged as malicious redirectors. The ML classifier also strongly indicated maliciousness.

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.club/123?keyword=fiesta+online+leveling+guide+90-100 In PDF document text
    • https://gikoberi.weebly.com/uploads/1/3/0/9/130969260/xopanegolezagiwixi.pdfIn PDF document text
    • https://kageketiwef.weebly.com/uploads/1/3/4/5/134581137/3662903.pdfIn PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/59823d138b5b19.pdfIn PDF document text
    • https://rafulosuzeme.weebly.com/uploads/1/3/4/2/134234553/6894623.pdfIn PDF document text
    • https://sukowaletudevux.weebly.com/uploads/1/3/0/8/130874669/3f8c71884.pdfIn PDF document text
    • https://gukaguse.weebly.com/uploads/1/3/1/3/131398473/zadoniko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373778/normal_5f93c922a4bc9.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/0cf5e90d-d556-4da2-8c47-07ba76079c9e/vesabetedopekez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bd5ee60-2b07-48f3-a334-2a8bb5b35801/72734626558.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5607501-bda4-4936-bed6-75de2ca4a8dd/86371925388.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_off000062f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F5 5296 bytes
SHA-256: 39300251049b8b41975d21095297145a87ae868448f5b7cb30544a9e9bce5804
font_01_sfnt_off0000751f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x751F 11760 bytes
SHA-256: 8b903cea8d1102fd50befb5fdcf3498040b1b2589000ff703f734ce4a5b89cb4

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