Malicious PDF — malware analysis report

Static analysis result for SHA-256 972c78cc3a8de8f5…

MALICIOUS

PDF

34.2 KB Created: 2021-06-25 05:33:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e15343c8fe0b21bb0246ca368bad811d SHA-1: 77948814346ee1972624c6cdfb16dc5ef4cd6a7b SHA-256: 972c78cc3a8de8f50b8d48b6fb5104d9aff367d99a8590b03fb7cdb2e5720a50
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded URLs that lead to known malicious redirectors, disguised as generators for free in-game items for popular games. The document body and heuristics confirm a lure-based attack pattern designed to redirect users to potentially harmful content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/i-want-to-break-free-roblox-music-video-game-hack In PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/how-to-get-free-exotics-in-roblox-assassin-2021_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-coin-spin_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-robux-with-only-username_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/moon-tycoon-roblox-gives-free-robux_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/redeem-roblox-card-codes-free_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-roblox-games-without-signing-up_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-games-like-coin-master_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_off00002c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C79 22508 bytes
SHA-256: aca311b2b250c8d4b05f6ce4918f70849d1c021b13665dd63823962966e3ad9b
font_01_sfnt_off00005eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB0 19888 bytes
SHA-256: db0b5a315ac86a753235fd9a1dd720d6444113d82cc80814dc8402755b1f1054

Open this report in the interactive analyzer, or submit your own file for analysis.