Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3e580f392b0b056…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 10:42:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ab5513bb2de0377b3a8fb50a84cd9ad6 SHA-1: 4280c776506941dbf93a30944eab9923901324dc SHA-256: f3e580f392b0b05675bfec9dc9d40b1dc79b1229d9e32ea7648858fc2e1b0298
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a "free generator / game hack" lure. The embedded URL, https://netcdn.online/app/406889139/coin-master-free-spins-hack-iphone-game-hack, is the primary indicator of malicious intent. While no scripts were explicitly extracted, the nature of the lure suggests it is intended to trick users into clicking the link, potentially leading to credential theft or further malware. The ML classifier also strongly flagged this PDF as malicious.

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.online/app/406889139/coin-master-free-spins-hack-iphone-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roebucks-com_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-place_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-mod-free-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/weird-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/app-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_off00005252.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5252 26040 bytes
SHA-256: 85b0f5dbf32ac274d5186887ff5830ebe4152e27238ff506073dccd1db3c1ab8
font_01_sfnt_off00008e09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E09 18220 bytes
SHA-256: 1dfaaa5fda009d523ba1163bf16545e2c66f7621c16cb7ff5e9bef64f998ba72

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