Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc95a13a56addd1c…

MALICIOUS

PDF

46.2 KB Created: 2021-05-15 06:46:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9a7d4d7ad71a5f62bf1804da6a27ef4d SHA-1: d8c388bc3c2fc4d000c29fdab5f1db1fbc56f6ab SHA-256: dc95a13a56addd1c7b603bb2cf88b6c53ddb9a82d1b01c79dbef6015c35e7c7f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary redirector URL is https://netcdn.xyz/app/406889139/free-spins-coin-master-2021-hack-game-hack, which likely serves as a gateway to further malicious content or downloads. The presence of numerous similar PDF links on icefuture.ru suggests a campaign distributing these lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/free-spins-coin-master-2021-hack-game-hack In PDF document text
    • https://icefuture.ru/images/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/getrobux-ninja_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/minecraft-pe_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/inappropriate-roblox_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000498a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x498A 25600 bytes
SHA-256: d0120d424791c5ed0fe3bc67c6384824a117b9df573cd8c4ebfe80a48ab92104
font_01_sfnt_off000083e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E1 4020 bytes
SHA-256: dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5
font_02_sfnt_off00009169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9169 18456 bytes
SHA-256: a5560883dc18b22b6e1d4164516743640258d4849b8ee5f58e623da8a68570df

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