Malicious PDF — malware analysis report

Static analysis result for SHA-256 b68353304c436f22…

MALICIOUS

PDF

46.4 KB Created: 2021-05-15 04:20:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7fd2b935f6b84ce3f6b4ee4c965bfde6 SHA-1: b150cd2f6d75b58e006decb7cdb5a79bc98a1a6b SHA-256: b68353304c436f2278e9bfdf18e08bad11af210f9975525705d73a35fc1a24e3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors and known malicious infrastructure, disguised as "free generator / game hack" lures. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the embedded links strongly suggest a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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/bad-minecraft-free-game-hack In PDF document text
    • http://www.riverkennet.org/uploads/files/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/robux-miner_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/free-robux-images_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004fc4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FC4 31624 bytes
SHA-256: 643958f91eebf24234077c259c860accda2ad49210abfc427e6c0b5d1f479c9b
font_01_sfnt_off00009494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9494 17956 bytes
SHA-256: 384105d45f3b455646b6eb64dcdb09349e5e1756e4baf8ede6c7c1462ef2dc47

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