Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8fb42274050d529…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 19:19:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 433903fb7b86fd3468765e4f6b500c6c SHA-1: 8cb38295d885b631068592c11f82020f364c57e4 SHA-256: c8fb42274050d529e20039241e53b4ded4051d0725905ec01d9511915f7f8625
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, masquerading as game hacks or free item generators. The heuristic firings confirm that the PDF links to a known malicious redirector and is designed as a lure for game hacks. While no scripts were extracted, the primary attack vector appears to be social engineering via deceptive links within the document body.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/hack-for-rpg-world-on-roblox-game-hack In PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-free-items-november-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/tiktok-free-zone_GM835599320.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-how-to-get-everything-off-the-catalog-for-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-information_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-download-roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/optifine-mcpe_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-promo-codes-for-roblox-2021_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3035 22492 bytes
SHA-256: 322e2cd686179e9ee2f962b9837af8c6bd7da4165955c14c37ffd042668ae8c9
font_01_sfnt_off0000628a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628A 19368 bytes
SHA-256: 71dfa84aa0492a9f0795e25d9ef027c83967bcc3547da7acce30f5f8aaf733bc

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