Malicious PDF — malware analysis report

Static analysis result for SHA-256 5641fd53b2d3cca3…

MALICIOUS

PDF

46.4 KB Created: 2021-06-08 11:01:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cf207b2fc30cca384193d4db3ddb0477 SHA-1: c45e8a5d29a35a30dc36495c1f92963bd72a981d SHA-256: 5641fd53b2d3cca39355b671ef86cdc2de7552105ac45f23969d76c256ad4f9b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body, though partially garbled, includes text related to game hacks and generators, reinforcing the lure. The presence of numerous embedded URLs, many of which are also related to game cheats and exploits, further supports the malicious intent. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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-do-you-get-hacking-station-roblox-game-hack PDF link annotation
    • http://fotoflas.gr/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://fotoflas.gr/images/coin-master-hack-apk-online_GM406889139.pdfIn PDF document text
    • http://fotoflas.gr/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://fotoflas.gr/images/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://fotoflas.gr/images/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://fotoflas.gr/images/whats-robux_GM431946152.pdfIn PDF document text
    • http://fotoflas.gr/images/free-tiktok-fans-without-verification_GM835599320.pdfIn PDF document text
    • http://fotoflas.gr/images/robux-hack_GM431946152.pdfIn PDF document text
    • http://fotoflas.gr/images/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://fotoflas.gr/images/daily-coin-master-free-spin-link-facebook_GM406889139.pdfIn PDF document text
    • http://fotoflas.gr/images/tiktok-free-download-windows-7_GM835599320.pdfIn PDF document text
    • http://fotoflas.gr/images/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://fotoflas.gr/images/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://fotoflas.gr/images/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://fotoflas.gr/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://fotoflas.gr/images/roblox-hack-script-booga-booga_GM431946152.pdfIn PDF document text
    • http://fotoflas.gr/images/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://fotoflas.gr/images/f3x-tools-hack-roblox-fe_GM431946152.pdfIn PDF document text
    • http://fotoflas.gr/images/game-toolbox_GM479516143.pdfIn PDF document text
    • http://fotoflas.gr/images/free-robux-android_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_off00005463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5463 25288 bytes
SHA-256: e14a5ec99daab3607255dff59c66b5379965e81b38c1a2b1675526967a863e17
font_01_sfnt_off00008f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F65 19328 bytes
SHA-256: 8270ff859e224eaec4d17b4ca90f3830da06fe36df8b6ee4c65935dcff71c671

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