Malicious PDF — malware analysis report

Static analysis result for SHA-256 eff29848e213e97d…

MALICIOUS

PDF

47.3 KB Created: 2021-05-14 01:09:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e99ebd2a49a2f3714335867f3f1a22e0 SHA-1: 39665392cf4b0d67ece96a6a44b5ab97920acb49 SHA-256: eff29848e213e97d10c54c3c2aa36ef4eaeabbcde402efbe17f912ade144ad79
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to malicious redirectors, masquerading as generators for popular games like Roblox and Coin Master. The ML classifier and specific heuristics indicate a high likelihood of malicious intent, likely to phish credentials or deliver a second-stage payload. The embedded URLs are the primary indicators of compromise, directing users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/roblox-svg-free-game-hack.
  • 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-svg-free-game-hack In PDF document text
    • http://bf-sozidanie.ru/images/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/grab-points-login_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/game-hunters-coin-master_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/village-coin_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/freerubux_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/robux-generators-that-actually-work_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_off00004a2d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A2D 26748 bytes
SHA-256: 9e79ea8cae9176868e5dcb69b32a9ae9c52f083765ef5f9e0424756116c2f2c7
font_01_sfnt_off00008938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8938 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009649.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9649 18348 bytes
SHA-256: 82620550cff65874d98c2836b8a60b7f72357efbb651992cfb4f65634f65914f

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