Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f6e7d080f944bf2…

MALICIOUS

PDF

34.4 KB Created: 2021-07-19 15:38:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1e42b50ea78c33f88e6af0a265bc775d SHA-1: 4c81040f9e75f69b2462a852da7ddd009baf09bf SHA-256: 1f6e7d080f944bf2ad6f9e187541d748b08ae981c7b5707373bdbc0d65b9adb7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lure users into clicking on what appears to be a game hack or generator. These links redirect to malicious infrastructure, specifically a URL associated with known malicious redirectors. The document body and embedded link actions suggest a phishing or scam attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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-hack-without-verification-2021-game-hack In PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/robux-hack_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-do-i-get-free-robux_GM431946152.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_off00002e61.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E61 23352 bytes
SHA-256: 9bb12ed0107d700ac433f1776f7401742cadc7468acb4bb437cda358d0573310
font_01_sfnt_off00006319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6319 18756 bytes
SHA-256: 1f8069b8e373c1677ee696ae61803aee5e0941708a1ef93a03d88c08535d6ef3

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