Malicious PDF — malware analysis report

Static analysis result for SHA-256 de6375cb6ce23cc7…

MALICIOUS

PDF

75.6 KB Created: 2021-02-07 02:22:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: adb581773fecddd6f3562d0920119785 SHA-1: d9a886c0ebd5273e3ea7dc5683e44d2dcf4db885 SHA-256: de6375cb6ce23cc7c70d18b1059818a7f503b5456e8e09b43e5d77b2072315f3
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm used for SEO poisoning or phishing. The document body, though heavily obfuscated, contains references to 'Epic Seven' and a guide, likely a lure to direct users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://bologen.ru/wb?keyword=epic%20seven%2010%2010%20guide PDF link annotation
    • https://nerutaraludu.weebly.com/uploads/1/3/4/6/134672403/vubagadesepomani.pdfIn PDF document text
    • https://depagolal.weebly.com/uploads/1/3/0/8/130813973/926346.pdfIn PDF document text
    • http://meriline.store/telehealth_services_definedukz8h.pdfIn PDF document text
    • https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/libuxarumomope.pdfIn PDF document text
    • https://bozadabeduli.weebly.com/uploads/1/3/4/8/134869561/tezafelukub-lusajupigaw-ruxukimewujipu.pdfIn PDF document text
    • https://nupimixek.weebly.com/uploads/1/3/2/7/132712066/cc172b77d.pdfIn PDF document text
    • https://xifanelisiwokof.weebly.com/uploads/1/3/0/8/130874433/14ded1b450196.pdfIn PDF document text
    • https://tuwuribo.weebly.com/uploads/1/3/6/0/136027226/c8523817d31528.pdfIn PDF document text
    • https://soxoxalumowaju.weebly.com/uploads/1/3/4/7/134768556/likagibatidup.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/wifukedot/party_with_bhoothnath_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/rupawo.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_off0000ec6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6A 5116 bytes
SHA-256: 08e4cc7dadf7e8fb793a051686374796b974c792c9ba6201acf85e8e1598ea95
font_01_sfnt_off0000fdfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDFD 10584 bytes
SHA-256: eda479802396451464588807a443538b1b1a7dc6bd5c546db285ecc695071340

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