Malicious PDF — malware analysis report

Static analysis result for SHA-256 153788f634a4ea9c…

MALICIOUS

PDF

44.3 KB Created: 2021-05-10 18:01:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 679de839844a01ecc00892298a8f1209 SHA-1: 9ea7a3aa139082833ee30285214baf47a7fa2cf3 SHA-256: 153788f634a4ea9c492ee00950210594806c7d265a0e4fba9ff86450877a49db
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures related to 'free Robux' and 'game hacks', directing users to external URLs. The presence of a 'free generator / game hack' redirector heuristic strongly suggests a scam or phishing attempt. While no scripts were explicitly extracted, the document's structure and embedded URLs indicate it's designed to lead users to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/431946152/free-robux-generator-com-roblox-hack-game-hack PDF link annotation
    • http://handimanlibrary.org/repository/coin-master-hack-1021_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://handimanlibrary.org/repository/robux-in_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://handimanlibrary.org/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://handimanlibrary.org/repository/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/coin-master-hack-ios-no-jailbreak_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
stream_003_off00004ada.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ADA 27652 bytes
SHA-256: c9b12acf0b96b3bdb86e7201cefb15ce63a66ac9ecb29da66bbb2cdf7cce35f8
font_01_sfnt_off0000893e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x893E 18852 bytes
SHA-256: 4f913a2277500713712aa6cd09c4e12b5f8093088fb24eab89a43b1b22929045

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