Malicious PDF — malware analysis report

Static analysis result for SHA-256 37f93a8ead028c8a…

MALICIOUS

PDF

46.4 KB Created: 2021-05-16 08:02:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d7c8e375d25f774904c90e241a2e3dee SHA-1: ea6ee9d509b1b6e1cb6f14af4563101e1b0a3e96 SHA-256: 37f93a8ead028c8a68f342727aca052ed80bb16017bdca18006e9de363b3d75f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and hacks to trick users into visiting malicious redirector URLs. The heuristics indicate the PDF links to known malicious infrastructure and uses a visual download button to encourage clicks. The document body contains multiple URLs that likely lead to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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/roblox-promo-codes-for-free-robux-game-hack In PDF document text
    • http://solidcommunication.ch/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://solidcommunication.ch/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://solidcommunication.ch/images/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://solidcommunication.ch/images/coin-master-vip-hack_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://solidcommunication.ch/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://solidcommunication.ch/images/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://solidcommunication.ch/images/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://solidcommunication.ch/images/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://solidcommunication.ch/images/worst-client_GM479516143.pdfIn PDF document text
    • http://solidcommunication.ch/images/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • http://solidcommunication.ch/images/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://solidcommunication.ch/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://solidcommunication.ch/images/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/coin-master-free-coins-2021_GM406889139.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_off00004ba1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BA1 26224 bytes
SHA-256: 3aa69acd248c32704c746c09eda93b2eed7f072ed9ad66d4b2f260ea211957f1
font_01_sfnt_off0000880b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x880B 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000091bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91BB 18676 bytes
SHA-256: 3ed324e585500d41944ebd93500991c566830021fec9c5a8323b790459c3443f

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