Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b608c99d9ea77b6…

MALICIOUS

PDF

45.9 KB Created: 2021-06-09 10:17:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: af6a8de5546dab5ffd1958497ba068c6 SHA-1: 8c1330438fd6bb3cd229c5ca726f1fbb72c8acd4 SHA-256: 9b608c99d9ea77b6b15106e252d9d29c89114e2cc9a757cd346da46c81f861b1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free currency generators. The primary redirect URL, 'https://netcdn.tw/app/431946152/roblox-scripts-download-hack-game-hack', is associated with known malicious redirector activity. The document body, though partially corrupted, contains references to these lures and embedded URLs, indicating a phishing or scam attempt designed to lead users to potentially harmful content.

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.tw/app/431946152/roblox-scripts-download-hack-game-hack In PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/pubg-8-uc_GM1330123889.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • https://www.dealcafe.me/uploaded_files/userfiles/files/free-coin-master-spins-for-today_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_off00004fb6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FB6 27364 bytes
SHA-256: 3a20a2d6c7806dffd421efeb5143e2a5eb6b0080bf783184ca607470f8183bfe
font_01_sfnt_off00008e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E1C 19088 bytes
SHA-256: accb384a00e59970558ecbf27857531332fcce0786a966dda9ceda47f031e912

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