Malicious PDF — malware analysis report

Static analysis result for SHA-256 7126319d5f7777e7…

MALICIOUS

PDF

34.7 KB Created: 2021-07-09 21:48:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 50ef38aa7f5858925804c4242c6b17a8 SHA-1: 45b036883da112d6c67062a4d1ab47834ade9563 SHA-256: 7126319d5f7777e7661a58c8d03c2dd0e7a7076ecfc09030c05579e623173682
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one that points to known malicious redirector infrastructure. The document body explicitly mentions 'Coin Master 15 Free Spin Link' and provides a URL that appears to be a lure for game-related cheats or generators. This suggests a phishing or scam attempt designed to redirect users to potentially harmful websites.

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-15-free-spin-link-of-last-5-days-game-hack In PDF document text
    • https://www.alarqam.ae/userfiles/files/what-is-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/get-robux-com_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-robux-generated_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/roblox-rewards_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/no-human-verification-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/roblox-hack-strucid_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/robux-converter_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-hack-someone-home-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/robux-hack-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_off00002f56.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F56 23052 bytes
SHA-256: 86291b111c5d2e3d052f31bca9e3e9b83ceb4355c7ffa8c23f24d1d11ac9229e
font_01_sfnt_off000062d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D7 18932 bytes
SHA-256: ab5bf67824d9f1de49592764067eca3c5a6c622e8f4c11d8ed5e999977e69fe8

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