Malicious PDF — malware analysis report

Static analysis result for SHA-256 299efefb196521a5…

MALICIOUS

PDF

45.1 KB Created: 2021-06-04 01:26:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: cc909b862220afd1acdf20a449cbe224 SHA-1: 9878e0f5039a7772ff1fbefc099c3531ea7437b8 SHA-256: 299efefb196521a5938c9c0516474e687de717046fd5f86ab5af3f8cc44b053c
142 Risk Score

Malware Insights

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

The PDF document contains a high-risk lure requesting recovery secrets or private keys, disguised as a "game hack" generator. It links to external URLs that promote free game currency or hacks, indicating a phishing or scam attempt. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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-mod-version-free-download-ios-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/pokemon-go-free-play_GM1094591345.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/hack-avatar_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-coins-for-coin-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_off000052af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52AF 25952 bytes
SHA-256: b54fd290fd16cf827aea4ef38d88cd2ba751274a472158d478161a59d22e7808
font_01_sfnt_off00008d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D51 18424 bytes
SHA-256: e21c1a46e414e08f32ecd5b141a565b40ef5ebf0a551a42677bec20a6ad54cab