Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7311882e074b427…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 09:13:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 64dbed613ae95df0a7d21f1d2eaeb5cb SHA-1: 3f0dd4601340fb649de5480cb7cff562ef7ea43d SHA-256: a7311882e074b427a9ec25d3bb1e46e305a6f544961651d234b1c0964628cc14
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 0.9980

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 http://netcdn.tw/app/431946152/how-to-get-free-roblox-gift-cards-game-hack PDF link annotation
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-gear-in-roblox-free-admin_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-make-a-cool-roblox-character-free_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-hack-cleant-jailbraik_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free4now-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hack-roblox-2021-pc_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/click-here-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-items-for-google-play-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hack-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-roblox-gift-card-codes-live_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-cheats-to-get-2021-robux-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/script-executor-hack-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/apk-roblox-hack-pc_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/guuud-info-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-recive-free-knives-for-murder-mystery-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031e1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31E1 22808 bytes
SHA-256: a2be3cb7c0db7e01774ca3670d893f3e056e42fa1f858eea307b21a17624a5f7
font_01_sfnt_off00006480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6480 19212 bytes
SHA-256: 593eff5b5799541de0a02f4e8f554df8daac443dfed6aeb2634dba9bf3a9d672

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