Malicious PDF — malware analysis report

Static analysis result for SHA-256 61dd224210aecf30…

MALICIOUS

PDF

49.9 KB Created: 2021-06-14 02:08:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bb03c96f3946511d043e7cbe712b8930 SHA-1: 9b12e2f3b608c2eb31978aa9ff912cfc2a8dab5d SHA-256: 61dd224210aecf30879c64ae38f657e14e73fd7a918922c77b637d248d55af94
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game items and hacks to entice users into clicking malicious links. The primary link redirects to infrastructure known for hosting malicious content, suggesting a phishing or malware distribution attempt. While no scripts were directly extracted, the PDF structure and embedded links indicate a malicious workflow designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9349

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-hackers-t-shirts-images-game-hack In PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/100-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-hack-a-roblox-account-with-forgot-password_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/freer-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-hack-2021-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-russian-clothes-roblox_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/60-free-spins-coin-master_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_off00004d40.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D40 31988 bytes
SHA-256: 39468d2c8e2fec34dcaa7f5cb5082059ef2080d18d22405883027b85a6464a5a
font_01_sfnt_off0000918c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x918C 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E33 19156 bytes
SHA-256: e4e3444794ac1a7a3bc6d4a3d1493235460deb27a330eaeff73620583e22b779