Malicious PDF — malware analysis report

Static analysis result for SHA-256 f453e99179c17ff4…

MALICIOUS

PDF

45.5 KB Created: 2021-05-19 03:34:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 19ac874ccc32c7636c873adfe37de6b9 SHA-1: 514f0b3318e2c9ea9115f3cbc8b567a843c6c5dc SHA-256: f453e99179c17ff4caef5d6f08f078ce36d018654182379e44dd40866e30af23
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses brand-impersonation credential phishing. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/406889139/coin-master-daily-free-spins-link-2021-game-hack.
  • 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.xyz/app/406889139/coin-master-daily-free-spins-link-2021-game-hack PDF link annotation
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/mcpe-free-download_GM479516143.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/corn-master_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/robux-claimer_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/free-robux-please_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049d3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D3 24504 bytes
SHA-256: f0c8af79c49f6451bf29fafb70d408018aac09dc968835fb56f7ef41fbdeb2d2
font_01_sfnt_off0000823b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823B 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00008d64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D64 18880 bytes
SHA-256: 4ccb81aabfc378a65bbb004da1df6276046c1b1923188410bd025f5007717b79

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