Malicious PDF — malware analysis report

Static analysis result for SHA-256 2027e9867efdd00a…

MALICIOUS

PDF

43.8 KB Created: 2021-06-07 09:12:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1c3070b21777a573e05589b97d59765f SHA-1: 7773abfc219314b10ddcceeb132e9ee19c439737 SHA-256: 2027e9867efdd00a6c8283da1760c5648078911926f56649cdad139474d254eb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as 'free generators' or 'game hacks' for popular games. The primary lure URL is https://netcdn.tw/app/431946152/how-to-get-clothes-with-codes-on-roblox-for-free-game-hack, which is designed to trick users into clicking through to potentially harmful content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/how-to-get-clothes-with-codes-on-roblox-for-free-game-hack In PDF document text
    • http://rlsaluminios.com.pt/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/how-to-get-free-roblox-100pasan-that-works_GM431946152.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/tiktok-free-10k-followers_GM835599320.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/pubg-uc-apk_GM1330123889.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/robux-hack_GM431946152.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://rlsaluminios.com.pt/images/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e0b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E0B 25120 bytes
SHA-256: e2d25c679c7bb6320c16fc9ddfebeecb16c66b2fa7628c6cbdca0f5cc7bc4ae5
font_01_sfnt_off000086a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A3 18872 bytes
SHA-256: 7649647a82387719235a3927128389ca48443b1e22ac3d2f9b6c7e564be906e8

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