Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e0ecb50f5349bf7…

MALICIOUS

PDF

34.1 KB Created: 2021-07-19 15:00:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b92a75f59f705ff0719529abe2e956fe SHA-1: cb84984ad0eac0bd403575f4b48899ba0f5a06cf SHA-256: 1e0ecb50f5349bf76d2ec060fd902dc73ba9ee65422cce5d521a0bc79f0fa3c7
82 Risk Score

Malware Insights

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

This PDF document contains multiple links to external websites that offer game hacks and generators, such as 'minecraft-pe-free-download-ios-no-jailbreak-game-hack'. The presence of these lures, combined with a high ML classifier score, indicates a malicious intent to redirect users to potentially harmful content. The document body explicitly contains a call to action, 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', further supporting the phishing or scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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/479516143/minecraft-pe-free-download-ios-no-jailbreak-game-hack PDF link annotation
    • https://knj.com.tw/image/data/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://knj.com.tw/image/data/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://knj.com.tw/image/data/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://knj.com.tw/image/data/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://knj.com.tw/image/data/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://knj.com.tw/image/data/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://knj.com.tw/image/data/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://knj.com.tw/image/data/files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://knj.com.tw/image/data/files/free-robux_GM431946152.pdfIn PDF document text
    • https://knj.com.tw/image/data/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.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_off0000323b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323B 21680 bytes
SHA-256: 735eaa1d7ef8caa96129e88dc7026b5b68114bd996880888cbb689b3a6e4172e
font_01_sfnt_off00006193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6193 18940 bytes
SHA-256: 384c56943b2f0ce7dd032d42d48bdddf0ac3b313714fbbfa672311f45c441041

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