Malicious PDF — malware analysis report

Static analysis result for SHA-256 575175c02d952f03…

MALICIOUS

PDF

38.9 KB Created: 2020-11-06 15:48:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 8d3a081d4be250d8ed433c74eae0f952 SHA-1: 114835c3e156366a9864d3d063cb388d676fbe47 SHA-256: 575175c02d952f03cf799e9aba5a72a196c25743a706a6f9eecddb44547f5f13
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://traffking.ru/aws?keyword=goodys+clothing+store+crossville+tn In PDF document text
    • https://zibeselev.weebly.com/uploads/1/3/4/1/134131471/9543740.pdfIn PDF document text
    • https://ginefudev.weebly.com/uploads/1/3/4/4/134454890/1018048.pdfIn PDF document text
    • https://tuxitusonodedin.weebly.com/uploads/1/3/0/8/130873989/similani.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367941/normal_5f884853bc931.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366308/normal_5fa12d322de0f.pdfIn PDF document text
    • https://leziwave.weebly.com/uploads/1/3/4/4/134446015/wojonepasafuxi_gizujajujo_xewexuj.pdfIn PDF document text
    • https://tasukivokojut.weebly.com/uploads/1/3/4/5/134592673/simukumazoru_korafi_darew.pdfIn PDF document text
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/dcd4dee.pdfIn PDF document text
    • https://vefozifus.weebly.com/uploads/1/3/4/3/134382693/xerokikoreguboza.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/zonebon/gatadumewezibopemov.pdfIn PDF document text
    • https://wupomasaxo.files.wordpress.com/2020/11/triase_rumah_sakit.pdfIn PDF document text
    • https://danusodemoza.files.wordpress.com/2020/11/86688992645.pdfIn PDF document text
    • https://s3.amazonaws.com/temuxow/vamewo.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_off00005cb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB7 5184 bytes
SHA-256: 15baa12ce3b7a1109e1807c8d27b0235473573c22b00a7d53bd0cc491d883ec6
font_01_sfnt_off00006e67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E67 9544 bytes
SHA-256: ecd141be20e745a8049a8dc7b7cb50c050730b8e8c6977a7aad4e8f9b3da943c