Malicious PDF — malware analysis report

Static analysis result for SHA-256 157ae29c029a7750…

MALICIOUS

PDF

41.5 KB Created: 2021-05-16 09:04:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 226e3ffcf8f06d9f83e8a429bd047aae SHA-1: 2f3d73a0dc5e9592beab73f989bfee889a8d0e05 SHA-256: 157ae29c029a775064c7b54a7944c86fb3c83909ff8b64d672d813e95b6eb95d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to `https://netcdn.xyz/app/406889139/free-spins-for-coin-master-hack-game-hack`, which is identified as a malicious redirector. The document body and embedded links suggest a lure for game-related cheats or currency, a common tactic for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a malicious redirection attempt, likely to a site hosting a secondary payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/free-spins-for-coin-master-hack-game-hack In PDF document text
    • http://poltekkeskhjogja.ac.id/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/roblox-games-with-free-boombox_GM431946152.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/minecraft-coins-free_GM479516143.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_off00004785.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4785 25144 bytes
SHA-256: 5db7bc5c47ef8555d4308260c3bae52ca8bdac056fdcd45ccdf17a7354b4fe86
font_01_sfnt_off0000807f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x807F 18056 bytes
SHA-256: 3401c90f9da97577ae440e5622d1e8fed8a056e7e09ad8fa85d1e768b8d8a9bf

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