Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d5625549d9e0c2…

MALICIOUS

PDF

37.4 KB Created: 2021-05-25 09:10:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3ba4305e03348845a7adcc66a4f0b0e6 SHA-1: f465b7aa2db79ec85a09683577708b587d1cc494 SHA-256: 89d5625549d9e0c223b136ea79368712e2e9674254066ae899e0fc65643adb60
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of free in-game currency or social media followers. The document body and heuristics indicate a scam designed to redirect users to potentially harmful websites. No scripts were extracted, but the embedded URLs and redirector lures are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/835599320/how-to-get-free-tiktok-fans-game-hack In PDF document text
    • https://steelfurniture.vn/public/upload/files/coin-master-hack-online-android_GM406889139.pdfIn PDF document text
    • https://steelfurniture.vn/public/upload/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://steelfurniture.vn/public/upload/files/hack-robux_GM431946152.pdfIn PDF document text
    • https://steelfurniture.vn/public/upload/files/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • https://steelfurniture.vn/public/upload/files/free-spins-coin-master-links-2021_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_002_off0000347a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x347A 26868 bytes
SHA-256: 3954f9340f9a79dd726313286e1166726affc155b1e32a1eb7062c835b0499a7
font_01_sfnt_off0000726a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x726A 17848 bytes
SHA-256: a2af0e2105c7a8aa19b9291fb3a0139b13b39cb6820be81d8c7aa710ed8fb109

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