Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a07a68c3e01467e…

MALICIOUS

PDF

41.4 KB Created: 2021-05-10 22:01:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1ccc0a1a3d43e283bdc049d7804ba5e2 SHA-1: d370ab3d2eb8c8d6d0d66979b5b55ab94072ea0d SHA-256: 9a07a68c3e01467efd10912da6ae9c7f0a9fbae3793bde71c3fee1fe02aa22b1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are identified as malicious redirectors, specifically targeting users with lures for game hacks and free currency. The document body, though partially corrupted, contains references to these lures and embedded URLs. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.xyz/app/406889139/coin-master-free-spins-and-coins-daily-game-hack In PDF document text
    • http://dshikr.ru/images/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • http://dshikr.ru/images/earn-robux-sites_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://dshikr.ru/images/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000469e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x469E 24440 bytes
SHA-256: 174060941b166c3923f74e963f5227ee0f9f427c8ba19cb2939c8d4b07d0726b
font_01_sfnt_off00007e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8D 18480 bytes
SHA-256: e9052e0f9c593188345ba389179451ef12c6c6a401d56a628cce0964dfd3917c