Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d3fd1792f3ed886…

MALICIOUS

PDF

35.4 KB Created: 2021-07-06 17:42:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 60474cc6890c741bdcfd3d1fa475ce7a SHA-1: eeefda8228ba32132e1e66342c846b7da7936140 SHA-256: 2d3fd1792f3ed886514ce57e18d0a8ba4ead0806af252b50799834b5f5611f36
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://netcdn.tw/app/479516143/minecraft-116-free-download-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/dragon-ball-xenoverse-br-roblox-hack_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-fishing-simulator-hack_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-without-verification-for-iphone_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/invisible-hack-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-shirt-free-shipping_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/descargar-roblox-hackeado-para-pc-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-robux-pc-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/flame-gg-hack-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/como-ser-un-hacker-en-roblox-impact-y-sin-virus_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-hack-roblox-tycoons-with-cheat-engine-63_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/hack-for-roblox-no-human-verification-2021_GM431946152.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
font_00_sfnt_off000032a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A0 22860 bytes
SHA-256: 075a6dc219b2e244dd8da0fd738180960a74828b361439009b2989b5c7bd7c66
font_01_sfnt_off000065e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E7 18852 bytes
SHA-256: c5567fa3bcb3d58c308c2338717d34c6e65ff434371c3860bee8e6483ac372f2

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