Malicious PDF — malware analysis report

Static analysis result for SHA-256 14b7ad4842fc24b7…

MALICIOUS

PDF

44.6 KB Created: 2021-05-17 09:02:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b1638baefe6950b64f9c971110499919 SHA-1: 72d0d3437d6730cde6f3402e35871cbcee9d0e1a SHA-256: 14b7ad4842fc24b70c75c3df98957e29c6b884a0d41dd9d0d88b887d2c46ab41
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, masquerading as a 'free generator / game hack' lure. The document body and heuristics indicate a social engineering attempt to trick users into visiting these malicious URLs. No scripts were extracted, but the presence of multiple malicious redirector links strongly suggests a phishing or scam attempt.

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 https://netcdn.xyz/app/431946152/how-to-win-free-robux-game-hack In PDF document text
    • http://steklofara.com.ua/images/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://steklofara.com.ua/images/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • http://steklofara.com.ua/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • http://steklofara.com.ua/images/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://steklofara.com.ua/images/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://steklofara.com.ua/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/how-to-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://steklofara.com.ua/images/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
    • http://steklofara.com.ua/images/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://steklofara.com.ua/images/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://steklofara.com.ua/images/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://steklofara.com.ua/images/robux-link_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/robux-sign_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://steklofara.com.ua/images/free-robux-group_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48AC 29100 bytes
SHA-256: f5f380315ac0a0e5dd7f06b4ffda6adb7061a701aa10ce60d4003610fe4611af
font_01_sfnt_off00008ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA2 18496 bytes
SHA-256: e7fadbffdbea7672d80b62dbce00c4cb5a3018b55a4b8226d615899545ab846e

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