Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f975447677d20b5…

MALICIOUS

PDF

34.6 KB Created: 2021-07-07 15:03:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6b594ea2e930846c34065bd5cf690297 SHA-1: 75de0b211fd8eac7acc5e41cb89c14d207633c70 SHA-256: 9f975447677d20b5a72c19da8a580d3152f487d3690233d719e062a66d304ce3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a 'game hack' redirector lure, pointing to a suspicious URL. The document body also contains this URL and references 'free spins and coins', indicating a scam or phishing attempt. While no scripts were extracted, the presence of the malicious URL and the lure strongly suggest the document is designed to redirect users to a potentially harmful site.

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-and-coins-on-coin-master-game-hack PDF link annotation
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/tango-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/all-promo-codes-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/inspect-element-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/how-to-get-your-roblox-account-hacked_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/roblox-swearing-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/synapse-roblox-free-download-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/free-assassin-coins-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/roblox-free-clothes-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/coin-master-60-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/roblox-adidas-shirt-free_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_off000030a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A8 22996 bytes
SHA-256: 9b721a2e836a91dc4a311cef6b35ced736a9907cc5df7fdd59f1e8f19f0ddafc
font_01_sfnt_off0000644a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644A 18348 bytes
SHA-256: 99aa2d2b2e9c114759ac0d3175951e1a7ccd7b87db14ea3fc4aa40a1608bcbe0

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