Malicious PDF — malware analysis report

Static analysis result for SHA-256 7517b5ab38346dea…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 09:38:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0d432fb6f11c0ef4146db62dbab421b1 SHA-1: c8d16b3ccb67930dc68b7e868d430eeeebe831be SHA-256: 7517b5ab38346dea9ab5a4d703d41d98b57fe28253688769d03c7fb80d364b21
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generators' and 'game hacks'. The document body and embedded URLs suggest a lure for users interested in obtaining in-game currency or cheats for popular games. The primary malicious activity observed is the redirection to potentially harmful websites, likely serving as a gateway for further malware delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-how-to-get-japan-sushi-card-free-game-hack In PDF document text
    • https://tnupacktour.com.tw/image/data/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/jailbreak-roblox-hack-script_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-hack-roblox-accounts-2021-android_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/hack-coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/roblox-tycoon-hack-scripts_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-hack-peoples-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-robux-giveaway-2021-dot-tk_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_002_off000031be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31BE 22456 bytes
SHA-256: 95ce3ad1d6388cf473ce36c9a5ff083d29389caad5e079657e43daade92c922a
font_01_sfnt_off000063f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F7 18984 bytes
SHA-256: eeeec89113fe9ffd5234c042272db78e0426ead830ff3aefcc3754689b647ffc

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