Malicious PDF — malware analysis report

Static analysis result for SHA-256 07fa56578cd77b53…

MALICIOUS

PDF

45.1 KB Created: 2021-06-11 07:39:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: bc8b3bdd39581c757d75d2117950c013 SHA-1: 3ab259672bed2bc3a0703fcca222ad073feab263 SHA-256: 07fa56578cd77b53d2d592ec449f61568c5da0df35247eb9f4aa8902db9a22fb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and lures related to free game currency and hacks, specifically targeting popular games like Robux and Coin Master. The primary link, https://netcdn.tw/app/431946152/how-to-get-free-robux-no-human-verification-no-download-game-hack, is flagged as a redirector to a game hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/how-to-get-free-robux-no-human-verification-no-download-game-hack PDF link annotation
    • http://www.tdbaska.hr/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-100-robux_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/code-to-access-a-game-that-gives-90m-robux-free_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • https://www.tdbaska.hr/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/roblox-strucid-cheats_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/oprewards-com-login_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-hack-without-verification-for-iphone_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
font_00_sfnt_off0000513a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x513A 26052 bytes
SHA-256: bad2071a18d3b23c1e1728259e55e9b032ba5e725b9343b0b394313d09b8c85d
font_01_sfnt_off00008a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A67 19440 bytes
SHA-256: a4612944622008cfd4c872ef1f793995608e5587a5b030dfb2f27545adafe187

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