Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb7dec369859b00d…

MALICIOUS

PDF

45.6 KB Created: 2021-06-03 14:40:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8f3acf618fe7370d6fa340a3fcc02ae1 SHA-1: bd30de339e2a35a09a787c5d6c379440541324c0 SHA-256: cb7dec369859b00d3a8de6888246184829b5e3fe28e5c2bed833d7dfef771ce3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious websites, masquerading as game hacks and generators. The heuristic firings indicate that these links are part of a known malicious redirector infrastructure. The document body and embedded URLs suggest a lure for users seeking in-game currency or cheats, which is a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/406889139/coin-coin-master-hack-game-hack In PDF document text
    • http://perpus.i2s-learning.com//repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/real-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/hack-coin-master-apk-ios_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e5b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E5B 30604 bytes
SHA-256: bb7ffac6a6deb7ce8bc71a763aaf82b7dfdbd040ae745da122bb2bb361a6dcfd
font_01_sfnt_off00009146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9146 17716 bytes
SHA-256: c15a8689411d8cca9ab0759ab4c496fe9b4353d676dd738e300719e9588112ed

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