Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d6f1595773afb0c…

MALICIOUS

PDF

71.8 KB Created: 2021-02-18 03:04:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: cef968182acc31cdb914577606dd8ecb SHA-1: bfd51bd09a98edd0932ab2d83eca293eb5d69af4 SHA-256: 2d6f1595773afb0cdc79cb07f7853d6b5ab626a004eebaf950a919dc01d8f96d
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs that redirect to various websites, many of which are hosted on disposable domains and appear to be part of a link farm. The document body, though heavily obfuscated, suggests a lure related to search results. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/wix?keyword=thermofight+x+results PDF link annotation
    • http://afracheat2.xyz/kepanemetaraw6drnh.pdfIn PDF document text
    • http://nubolutlion.xyz/download_ps3_games_on_ps40kwxw.pdfIn PDF document text
    • http://llloooodddd.space/pesijefiraluwk27cy.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/WahjyJp/how_to_download_mobile_application_in_pc.pdfIn PDF document text
    • http://italystore.pro/at_t_u_verse_bundle_customer_servicef70yk.pdfIn PDF document text
    • http://sfr-webmail.com/junit_html_report_generationbh8zw.pdfIn PDF document text
    • http://rankingcoach-seo.com/hepatorenal_syndrome_guidelines1mjn6.pdfIn PDF document text
    • http://opticsystem.website/gubamexuzobipepubinaparum6nobn.pdfIn PDF document text
    • http://zubiki.top/anger_of_stick_4_money_hack_apkcpptb.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/woxorojero/35919188584.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_off0000dc98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC98 4988 bytes
SHA-256: 54c8ee545d0a96e789764560c489799c68270bf7f940501a27034248bcad46a1
font_01_sfnt_off0000ed72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED72 10968 bytes
SHA-256: e09dd1a1f492d60ebc545f12c98b3e53a9a97c132b153d417c3705b84625d495

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