Malicious PDF — malware analysis report

Static analysis result for SHA-256 e91c31ff2eed11cd…

MALICIOUS

PDF

42.7 KB Created: 2020-10-14 23:40:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 96dd3f076878e3fd8760bed174967c4e SHA-1: e086798ea1664e63f1db6958c4f4d6635e4e4889 SHA-256: e91c31ff2eed11cd30a968996efeb2f96ff0d04b4115cdfe2d1e85522846c9ad
124 Risk Score

Malware Insights

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

The PDF document contains embedded links that point to known malicious redirector infrastructure, specifically `https://ggtraff.ru/123?keyword=ebay+dropshipping+guide+pdf`. The document body, though heavily obfuscated, also contains references to this URL and other PDF files hosted on disposable domains. This suggests a phishing or scam attempt designed to redirect users to malicious content.

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 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://ggtraff.ru/123?keyword=ebay+dropshipping+guide+pdf In PDF document text
    • https://site-1039342.mozfiles.com/files/1039342/viwimoribedatupelowemex.pdfIn PDF document text
    • https://site-1040780.mozfiles.com/files/1040780/rozasejunavum.pdfIn PDF document text
    • https://site-1042830.mozfiles.com/files/1042830/95302315287.pdfIn PDF document text
    • https://site-1042354.mozfiles.com/files/1042354/88898022589.pdfIn PDF document text
    • https://site-1038820.mozfiles.com/files/1038820/vovupaneninabuketima.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365649/normal_5f8706a9ef96a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5f872bd88489e.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/c76c3672.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/9400458.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/dozafawegikuxoto.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/5ca4452c-a9cf-4dff-a846-577d5d977ab3/99309382429.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0f595cc-9fc3-4117-80d9-f188b456709b/80681546226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4172/5857/files/rijilozawom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8515/1390/files/punctuated_equilibrium_theory_policy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a68781ed-d1de-4d1e-8ca8-ac81f28ccfc7/88280167614.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4353cdc-75cb-4372-8287-def88d01b61c/70991453316.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_off000068b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B6 5472 bytes
SHA-256: f510e1a56f46e1ed89cd824a2210b26d1a9c7b9252d60129aad16d13ee268398
font_01_sfnt_off00007b4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4F 10188 bytes
SHA-256: 5e1b41dd67caad00412c562b4fd562dd66b5daee1f50a9e35c4323c0d02ba205

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