Malicious PDF — malware analysis report

Static analysis result for SHA-256 064f3d01da41663f…

MALICIOUS

PDF

48.4 KB Created: 2020-10-15 00:24:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 49965cbd74142c33bc7aa3ac03fddac8 SHA-1: 7280d802b10e4375d92df842707a68c75942a2c8 SHA-256: 064f3d01da41663f4e5710f8cd6a2a19446842db744939fe7e50f5fdb85baf50
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic indicating it links to malicious redirector infrastructure, specifically pointing to 'https://ggtraff.ru/123?keyword=iucn+red+list+of+threatened+species+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to trick users into visiting a potentially harmful site. The presence of numerous external PDF links further supports a link farm or SEO poisoning tactic.

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://ggtraff.ru/123?keyword=iucn+red+list+of+threatened+species+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_5f876a8d695a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f87675015969.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365602/normal_5f876aec130d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366653/normal_5f8769a1c1065.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f86f8ec5c257.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/1/0501/6515/3942/files/gonivotopejuloxuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2196/6744/files/superstar_jypnation_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9723/4338/files/86122233363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3838/7607/files/fisica_moderna_y_sus_ramas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9127/1073/files/triple_bond_symbol_chemistry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44b881ee-60e7-49ce-8c9f-15e54164a0e7/20433329437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40162786-7771-4146-989e-edbe7666e05b/vagejadipuwelokuzojom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f6500ab-c19c-459b-a114-ae7ff94f5ab0/tarapefovazesabo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ed0aabf-01c2-420e-b253-c7fe3fd6303d/gokizogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88803442-9e79-40b6-9e57-7716407765e6/kilurowapogerarabajamamuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/debce6d6-66a1-45a2-b6e8-1edc097c1dbc/30313626040.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31f2c766-0c38-4f06-b26d-dfaf15b5bec7/23646272158.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52ecf884-e3ed-4001-8138-839f76c3dd62/jepejinodemo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58edba8a-3057-4a15-9211-6e5a2069ef97/11986417438.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc5fb5fa-bffa-4c35-8c8f-954456c9b64f/19254490136.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a9aec91-109b-487e-8bc3-5e6de5717833/91024343131.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_off00007f71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F71 5180 bytes
SHA-256: 48262ad429707105995e35a05bbd5608379fc3242ccd3ca7464b96b8fce3555a
font_01_sfnt_off000090fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90FB 10240 bytes
SHA-256: 80eedd16488ffd0dd806d14accaa871449fa4508b665098c310d55783363f115

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