Malicious PDF — malware analysis report

Static analysis result for SHA-256 16cc7617c44459e6…

MALICIOUS

PDF

42.2 KB Created: 2021-05-12 23:44:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a8a1c29e25f6e78df5e6d52991da62bc SHA-1: fe0a6c08dca17a5dde022718f4e5a6b69d1fd573 SHA-256: 16cc7617c44459e60a584d7f9db52c4cd164d682779964ac37bcbfe8eed36463
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'generators'. The primary redirect URL identified is https://netcdn.xyz/app/479516143/chisel-and-bits-mod-pe-game-hack. The document body, though heavily obfuscated, contains references to this URL and appears to be a lure for users seeking cheats or exploits. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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/479516143/chisel-and-bits-mod-pe-game-hack In PDF document text
    • http://texnes-plus.gr/images/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://texnes-plus.gr/images/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://texnes-plus.gr/images/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://texnes-plus.gr/images/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://texnes-plus.gr/images/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://texnes-plus.gr/images/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • http://texnes-plus.gr/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/coin-master-hack-without-verification-ios_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_off00004c48.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C48 24152 bytes
SHA-256: ea9c9b3c579e5734ccd3b5cf98aeb556eb8de0cb1f7a665d68cb12afc5952343
font_01_sfnt_off000082c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C1 18268 bytes
SHA-256: 21600419038eacf8d17a25e0de8b2d3f701338884b0b037dc932f5efdb40593c

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