Malicious PDF — malware analysis report

Static analysis result for SHA-256 59ac63115eafd04c…

MALICIOUS

PDF

48.6 KB Created: 2021-05-19 14:08:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 1f7857aa4245813dbb70eb6603ec6bee SHA-1: dc2bdb5f9dd4fe8c6aa585c9228b4009e311e3a0 SHA-256: 59ac63115eafd04cf4b9501d2c86c155674033428071b857bc2793a27de9e0ab
160 Risk Score

Malware Insights

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

The PDF document employs a lure related to free game items and hacks, directing users to malicious redirectors. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent. While no scripts were directly extracted, the document's structure and embedded links suggest it is designed to lead the user to a malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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/get-free-robux-info-game-hack In PDF document text
    • http://sbm-nn.ru/images/clients-minecraft_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spins-link-download-for-iphone_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-daily-free-coins-link-today_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004850.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4850 25196 bytes
SHA-256: dafbe105084240b63dd7ebe9c6345db83eba580d7f6c397724f9d83f515d83d0
font_01_sfnt_off000081af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81AF 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00008bb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB9 6636 bytes
SHA-256: 62075f0fe13502d46afb6e55e83d440c29ef4988399537df1f86e7653ce3b744
font_03_sfnt_off00009bc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BC6 18120 bytes
SHA-256: 6e6e8bb7c0e640fc67837f70826b1bbd381eb05acf75ec047415621944091573

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