Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddf9534fd7e812ce…

MALICIOUS

PDF

46.8 KB Created: 2021-05-17 06:09:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: acb11e933f7c212c314e603f334d4d2c SHA-1: 10f7de063a32999b42ed65f1ea2a622f98cefbe8 SHA-256: ddf9534fd7e812ce1f2ef50d4a844221288603456ec0cf58235e690172b93d18
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, masquerading as "free generator" or "game hack" lures. The primary URL, https://netcdn.xyz/app/406889139/coin-master-free-spins-2021-app-game-hack, is associated with a "coin master free spins 2021 app game hack" theme, indicating a phishing or scam attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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/406889139/coin-master-free-spins-2021-app-game-hack In PDF document text
    • http://chjames.com.au/images/coin-master-hack-1021_GM406889139.pdfIn PDF document text
    • http://chjames.com.au/images/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • http://chjames.com.au/images/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://chjames.com.au/images/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://chjames.com.au/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://chjames.com.au/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://chjames.com.au/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://chjames.com.au/images/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • http://chjames.com.au/images/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
    • http://chjames.com.au/images/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://chjames.com.au/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://chjames.com.au/images/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
    • http://chjames.com.au/images/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://chjames.com.au/images/robux-redeem_GM431946152.pdfIn PDF document text
    • http://chjames.com.au/images/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://chjames.com.au/images/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://chjames.com.au/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://chjames.com.au/images/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://chjames.com.au/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://chjames.com.au/images/robux-websites-2021_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_off00004b64.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B64 36212 bytes
SHA-256: 9e1bba7a22eb8acb8abdf4985c6cc6910804a3af41e32c4c77957a2984afd114
font_01_sfnt_off0000950e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x950E 18288 bytes
SHA-256: e1bcb274cc5c07ccce6fbd578859727f24473d5eac267468e0931db8f4e9f890

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