Malicious PDF — malware analysis report

Static analysis result for SHA-256 610a7a18d4a2af2d…

MALICIOUS

PDF

35.5 KB Created: 2021-07-06 06:10:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: dbf8ba4e816505b925765bef43e99513 SHA-1: 31004bff3df71f22facc0392d88f1db5a95845fe SHA-256: 610a7a18d4a2af2d381b37b5113fc1cf14c8fedc444d4fd2bbf3e9b61bfd0530
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free robux'. The primary redirector URL is http://netcdn.tw/app/431946152/how-to-hack-someones-roblox-account-2021-game-hack. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malware downloads or phishing attempts. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-hack-someones-roblox-account-2021-game-hack In PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/hackear-y-tener-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/isle-how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/how-do-you-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/undetected-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/can-you-really-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/pokemon-go-free-walk-ios_GM1094591345.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-hack-no-verify_GM406889139.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
font_00_sfnt_off000032d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32D7 22040 bytes
SHA-256: b1fb20359e72484e0cadbae0c03fe5e4053f787c4a3c975f5cff5e0ddaeb4714
font_01_sfnt_off00006358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6358 19724 bytes
SHA-256: f50c412bcfe1d1f98486a75b2c7138549e2bea37deae9173a274dae717afecb9

Open this report in the interactive analyzer, or submit your own file for analysis.