Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f5a74649240cf0…

MALICIOUS

PDF

46.7 KB Created: 2021-05-17 00:37:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e639576b5d47ebba9e3fa57cc7c406cd SHA-1: c43300822ea987de8359461a7ca6bb8a74fcb903 SHA-256: d1f5a74649240cf02c315ac6f7cba013f862429b054e32c6643e57544b5f3936
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector for "free Robux rewards" and game hacks. The document body and embedded links suggest a lure for users interested in game cheats or virtual currency. The presence of embedded URLs and the nature of the lures indicate a phishing or scam attempt, likely leading to further malicious content or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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/free-robux-rewards-game-hack In PDF document text
    • http://apostolosandreaslemesou.com/images/fb-coin-master_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-free-master_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/code-free-robux_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-account-roblox-with-robux_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_003_off00004afd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AFD 30712 bytes
SHA-256: daff4f86e3bd6ce6ab6a56747eeaa98c03e62ac9d908172612bf36a5188c58f4
font_01_sfnt_off00009390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9390 18580 bytes
SHA-256: f6e5d240c50f73aa936fa09c98082d3b637660329d811c3f0d463ac63f7ff7de

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