Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68cda9427da37a5…

MALICIOUS

PDF

43.3 KB Created: 2021-06-03 18:59:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b5e9761ab1021b32600ec45b865bd25e SHA-1: 5fa59c8056c7596ae5202121ecb6442df7b8e07e SHA-256: d68cda9427da37a5528382c541c2d8cb60ffa9e9de072065cbbbb21a228f0a1f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious websites, masquerading as game hacks or generators. The primary malicious URL identified is https://netcdn.online/app/406889139/coin-master-unlimited-spin-link-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-unlimited-spin-link-game-hack In PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/krnl-download_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/www-robux-redeem_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-spins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-exploits-for-roblox_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
stream_004_off00004efe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EFE 24728 bytes
SHA-256: 9640b41cd81cd13df5b9ae70e2df606230181fe122f536e46b0aece0c35477b6
font_01_sfnt_off00008587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8587 18584 bytes
SHA-256: 4b9e97571f76fbd37980e49efa03e4d0776fec80245dbf17b6cc6ba6596e58ec

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