Malicious PDF — malware analysis report

Static analysis result for SHA-256 b57194b629e5bb96…

MALICIOUS

PDF

46.9 KB Created: 2021-06-03 13:50:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ab15b47b813b67041903253d619f9393 SHA-1: f864e5a24eccf8a3894f0b03972e665646b50472 SHA-256: b57194b629e5bb96ef56f16d2fcab4d04ccb52166e830146756658eb441f2d4a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that lead to known malicious redirectors and sites offering game hacks and cheats. The document body, though partially obfuscated, contains references to 'Coin Master Raid Hack' and includes URLs that are flagged as malicious. The presence of these links strongly suggests an attempt to lure users to malicious infrastructure, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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-raid-hack-game-hack In PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/script-for-pubg-uc-hack_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/unlimited-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050f4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50F4 24676 bytes
SHA-256: 0c8b5e8286a9040a66f3d9d1acd1ac67770bbd190d5f25a87bc12261acd2c108
font_01_sfnt_off0000884e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x884E 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off00009201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9201 19044 bytes
SHA-256: 51078efd9cdd5e37d7ee65db05b3ea8a7a8ea4b6ed7237b0389f33ce533f21e8

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