Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc3fac8682cbdbe6…

MALICIOUS

PDF

44.1 KB Created: 2021-05-12 05:36:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7029b8ef8f6f383ef1eab7d21dad7abe SHA-1: 80f09eda79cc22a0dbb676c52bfa35586b4fd7ea SHA-256: dc3fac8682cbdbe6c9b5d5bfe37b1b9081480ca7691c4abe9ec2ad474d6aa974
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 0.9648

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.xyz/app/406889139/free-coins-coin-master-blog-game-hack PDF link annotation
    • https://repository.umgo.ac.id/repository/vip-roblox-free_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coins-master_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-app-hack_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/daily-free-spins_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/get-me-free-robux_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
font_00_sfnt_off00004a02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A02 23832 bytes
SHA-256: 30b375bc7bbf7ef6aeebdfd242b4d6238d3aa49c93b1c79423421b3889ee966c
font_01_sfnt_off00007fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FDA 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000089c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C4 18288 bytes
SHA-256: 525699ae71861fffeab431a07c950b4914d38a871fb98becad0e0bea9ac3f1df

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