Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b8bafccf4e1775c…

MALICIOUS

PDF

34.7 KB Created: 2021-06-22 03:37:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 96b377aa54c5c7b281aced56131371ed SHA-1: a8c00a4053e1ff9b452e0326b29a4deb5e39c8ab SHA-256: 7b8bafccf4e1775c54e900345ab0db2074d7ca587f7e5da7286c4de1e2810169
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a malicious domain, masquerading as game hacks and generators. The primary lure is 'Roblox Hacks 2021' pointing to http://netcdn.co/app/431946152/roblox-hacks-2021-game-hack. This suggests a social engineering attack aimed at tricking users into visiting potentially harmful sites, likely for further malware delivery or credential harvesting.

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.co/app/431946152/roblox-hacks-2021-game-hack In PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/cheat-engine-roblox-65_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/roblox-create-shirt-free_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/coin-master-homepage_GM406889139.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/tiktok-free-view-iphone-theme_GM835599320.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/pubg-uc-generator_GM1330123889.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/roblox-free-looks_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/account-stealing-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/how-to-hack-a-roblox-account-vermillion_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/free-coin-master-cards_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
font_00_sfnt_off00002f81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F81 22672 bytes
SHA-256: 622d1aa86b1628defd804e4ad602ead45b8318f50dc8eb9f287df4b02f4c9f0a
font_01_sfnt_off00006244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6244 19056 bytes
SHA-256: a827687bde1c23907f75db23928d8c544c1849638492c2c48bf6e5fa6ea38882

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