Malicious PDF — malware analysis report

Static analysis result for SHA-256 112568abbc75a029…

MALICIOUS

PDF

48.5 KB Created: 2021-06-03 12:33:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ddd1db6b3135bcb4636db90412fbdbd7 SHA-1: c999a8facea2a1728397a0c6d18a81b05b4dc149 SHA-256: 112568abbc75a0292e4b7a1c4c980aa018e3ce19720e4e4afc5a6d2860d6fcdb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9796

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 https://netcdn.online/app/406889139/play-coin-master-online-free-game-hack PDF link annotation
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-ftw_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/grabpoints-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spin-generator-for-coin-master_GM406889139.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_off00005438.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5438 28096 bytes
SHA-256: 5f0c9c8063d69c5de73ffc33e05a016fe02355e1002620fafaee921c80047c08
font_01_sfnt_off000091fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91FB 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off00009bae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BAE 18116 bytes
SHA-256: 75e6da456e5777836686d8f4e9fdcb9a5e34bbb59f632c942c20d619e2f7343d

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