Malicious PDF — malware analysis report

Static analysis result for SHA-256 bebd18f078f54133…

MALICIOUS

PDF

44.5 KB Created: 2021-05-13 15:33:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 46ecd8dd1d2a6dccb253efcb66e7b116 SHA-1: dd09b82f16815f259516132f5f636a8eb8dfaf2d SHA-256: bebd18f078f5413395cdcd4683cff543c1bea3b9a1b0b6959c84f285c8dfefbd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to a website offering a 'free Robux game hack'. The heuristics indicate that the PDF links to known malicious redirector infrastructure and is designed as a lure for game hacks. Although no scripts were extracted, the embedded URLs and the nature of the lure strongly suggest a phishing or scam attempt, likely leading to further malicious content or malware download.

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 https://netcdn.xyz/app/431946152/win-free-robux-game-hack In PDF document text
    • http://kukuck.de/images/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/robux-come_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/coin-master-golden-card-hack_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://kukuck.de/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/google-roblox-games_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://kukuck.de/images/roblox-avatar-com_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
stream_003_off000048ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48EE 29236 bytes
SHA-256: 50fdc82a6a2747b8f64c6af2574407fe730f973ea95f11c67856b3577014de89
font_01_sfnt_off00008ba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA3 18332 bytes
SHA-256: abf0b8ed31f5047ebf3c1463738251345f2a3e8ea43e3f17fb5c5b26bb0b5a7e

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