Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bb0cb1fd11947ab…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 19:47:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 098c731236af36ccb38043f4bb8532d9 SHA-1: 6762e9cf77a7fe17170e298895d30f5556dfe7c8 SHA-256: 9bb0cb1fd11947ab172c84375652af4fd0944ef97046b0c45d5469cb14343ac2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains embedded links that are identified as lures for game hacks and free currency. The primary link, http://netcdn.tw/app/406889139/free-spins-on-coin-master-2021-game-hack, is flagged as a redirector to a game hack. This suggests the document's purpose is to trick users into visiting malicious sites, likely for credential harvesting or malware distribution.

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/406889139/free-spins-on-coin-master-2021-game-hack PDF link annotation
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/get-free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/pubg-uc-50-tl_GM1330123889.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-get-a-mythic-for-free-in-assasin-roblox_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/destruction-simulator-codes-roblox-hack-para_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-apocalypse-rising-hack-script_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/hack-app-data-roblox_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-hack-robux-2021-on-ipad_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_off000030d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D6 22540 bytes
SHA-256: b94722ba4679f89b789a296c526ab942a352764d24ff7ace70c5d668d85ada12
font_01_sfnt_off000062c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C3 18576 bytes
SHA-256: 592e144e19b3a0fb235169ea68d8700deb7f7882d554043d1d7a76374456614b

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