Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5f596e8f75c0d12…

MALICIOUS

PDF

42.3 KB Created: 2021-05-14 18:06:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: f5955a710e698281a4fa16d5845935a4 SHA-1: dfb1e916afd2126c0628de0f0a891d82c9ffe127 SHA-256: e5f596e8f75c0d12ce7940ec0d0f1815f39fb7be00aaf064e9ff7e011b89cd46
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'game hacks' and 'generators' for popular games. The document body and extracted URLs strongly suggest a phishing or scam attempt to lure users to malicious websites. While no scripts were extracted, the embedded URLs and heuristic firings indicate a clear intent to redirect users to potentially harmful content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/roblox-com-hack-game-hack In PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/roblox-weird_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/daily-coin-master-free-spins_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_003_off00004a18.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A18 24640 bytes
SHA-256: 4dac5540cc8c894b062e6d140d1673eed6d26bd333fa3b64c3da86d662a10496
font_01_sfnt_off00008295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8295 18440 bytes
SHA-256: 998502f3d31251ba6a8b9f896cebf55eeafd88011b242c250778658ce2e0bbe6

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