Malicious PDF — malware analysis report

Static analysis result for SHA-256 74acebf4c2298721…

MALICIOUS

PDF

47.2 KB Created: 2021-05-15 08:03:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 82dccf774e0b2121cb0e4058e9eaf76d SHA-1: 6c269891e4920041f2ba68e2a7873080ad4a0c5a SHA-256: 74acebf4c2298721153ee107bde7488a89b8019d4ab613b923ab765aaaf7e5ff
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a primary link pointing to a 'free generator / game hack' lure. This strongly suggests a phishing or scam attempt designed to redirect users to malicious infrastructure. The ML classifier also flagged the document as malicious, reinforcing this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/431946152/how-to-get-free-robux-on-iphone-game-hack In PDF document text
    • https://gryps.de/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/coin-master-fan_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/minecraft-client_GM479516143.pdfIn PDF document text
    • https://gryps.de/images/coin-master-online-free-spin_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/113-hacked-client_GM479516143.pdfIn PDF document text
    • https://gryps.de/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://gryps.de/images/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000493e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x493E 29608 bytes
SHA-256: 208c728c4e614823446a788f043d15b63d87b26201177e98932b36e6c300b957
font_01_sfnt_off00008b48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B48 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off000094e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94E8 18624 bytes
SHA-256: 22426b865d680281cc4768d4f40ba725f59186fc510e45c7c95a1e6bea128c39

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