Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d074c0ccffb7290…

MALICIOUS

PDF

45.5 KB Created: 2021-06-08 22:12:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 96de962aa2ffe1158d2535ea15b0dbd1 SHA-1: 56b804f116d9fa11db117f57a0a6decdb76d8e3c SHA-256: 5d074c0ccffb729038b0b9f1ab290f5c68cb1e1ad6e9bdfbfa6060e817a342c9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic firings indicate that these links are designed to lure users into clicking on them, likely leading to further malicious content or downloads. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to exploit user interest in free game items to compromise their systems.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/cheat-engine-robux-hack-2021-game-hack In PDF document text
    • http://alcomet.ru/images/free-pe_GM479516143.pdfIn PDF document text
    • http://alcomet.ru/images/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://alcomet.ru/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/wurst-18_GM479516143.pdfIn PDF document text
    • http://alcomet.ru/images/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://alcomet.ru/images/login-robux_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://alcomet.ru/images/how-do-i-get-free-builders-club-on-roblox_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://alcomet.ru/images/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/free-minecraft-hacks_GM479516143.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
font_00_sfnt_off000054a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54A9 24596 bytes
SHA-256: 9ffa67bbf9ad2eb480dfc5143cfd5b258162fc1b8983187164d3a837cd31b795
font_01_sfnt_off00008be8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE8 19328 bytes
SHA-256: f70d0039c88fdbcd0b3013ec9988b8d36f032c48f7f74ea556617fb24b1939de

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