Malicious PDF — malware analysis report

Static analysis result for SHA-256 16d68ed71c15269e…

MALICIOUS

PDF

58.6 KB Created: 2021-02-27 17:06:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: b091c50dc70a149c41efaf38a601c5bc SHA-1: 88041ebf002807ad6ee4efd723771a518982e96b SHA-256: 16d68ed71c15269e51c4da98d55b6e7ea6704262d9ee6bc3e221bdf603e8d4c3
64 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to disposable hosting and are likely part of a link farm designed to redirect users. The ML classifier also flagged this PDF as malicious. The presence of external URIs and the link farm heuristic suggest a phishing or redirection attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8255

Heuristics 3

  • 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
  • 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://seumenha.ru/award?keyword=how+to+set+timex+marathon+watch PDF link annotation
    • http://cabinetsop.xyz/banished_tv_series_episode_guidehbo55.pdfIn PDF document text
    • http://feyakast.online/78615007733swtbq.pdfIn PDF document text
    • http://ylyn.ru/17812288646tlpd0.pdfIn PDF document text
    • http://table-wait.com/cancer_immunotherapy_principles_and_practicestkb6.pdfIn PDF document text
    • http://busurman.space/free_online_auto_tune_recorder_nosi9qt.pdfIn PDF document text
    • http://prodit.space/hilti_te_17_repair_manuali9mi7.pdfIn PDF document text
    • http://jivusibofonefud.mygamesonline.org/llewellyn_set_dark_souls_2.pdfIn PDF document text
    • http://mastericy-chistoty.ru/ketitezobazamilubipez52vy8.pdfIn PDF document text
    • http://nafarami.medianewsonline.com/double_integral_calculus_calculator.pdfIn PDF document text
    • https://cdn.sqhk.co/zofonabiz/jahijaU/tokaido_game_review.pdfIn PDF document text
    • http://folejaf.mypressonline.com/minivuze.pdfIn PDF document text
    • http://pubgmobiie.com/alphabet_chart_with_pictures27rjb.pdfIn PDF document text
    • http://frukt.space/animorphs_book_8zw8pz.pdfIn PDF document text
    • http://fruittea.space/file_manager_windowsavbv8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sabixukavizom.myartsonline.com/lawuzolerefokupota.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/92816436005.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d46f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD46F 5128 bytes
SHA-256: 141de13afb463482affc17f649ea7d45725ca3637ab3b72636650ec8f45944f1

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