Malicious PDF — malware analysis report

Static analysis result for SHA-256 6155849d106a34a0…

MALICIOUS

PDF

43.7 KB Created: 2021-06-03 08:49:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 12d04207ba2cf5fbdb524ec8211785d2 SHA-1: c9f09b68ab041ccb034ea76cfdd5aefcf91019f2 SHA-256: 6155849d106a34a0f5c40e8750fc7e283ad8316ec0b05b34680c351b89aa7ffe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency, directing users to a known malicious redirector. The embedded URL, https://netcdn.online/app/406889139/feb-23-2021-free-coin-master-spins-game-hack, is associated with malicious redirector infrastructure. The document's structure and content suggest an attempt to trick users into visiting potentially harmful sites, likely for further malware delivery or phishing.

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.online/app/406889139/feb-23-2021-free-coin-master-spins-game-hack In PDF document text
    • https://ibelive.tw/image/data/files/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-ftw_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-spins-coin-master_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_off0000511d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x511D 24396 bytes
SHA-256: 5af454776cd0d952e571885b5a7b845c80ab4f8329c789d7b33535db35ffb360
font_01_sfnt_off0000871e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x871E 18620 bytes
SHA-256: e4df661a92880538668b358c87f5272d6176bbf79a36016d2a0b4349a414f314

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