Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a12f89d87f4f19…

MALICIOUS

PDF

44.8 KB Created: 2021-06-09 06:01:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c1ed07deae92a01e1a1fbcffa846d7d7 SHA-1: cf1c0a17e28082fb38267c7807a57b3680e71e6d SHA-256: d7a12f89d87f4f195abc1145df79690395bedc7994ad208f1276ebac7a411190
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 leading to a 'game hack' lure. The presence of a visual download button further supports a social engineering attempt to trick the user into clicking the malicious link. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/how-to-hack-stuff-on-roblox-game-hack In PDF document text
    • https://opac.umrah.ac.id/repository/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-project-jojo-cheats_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/pubg-uc-660_GM1330123889.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-tool-for-pc_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_004_off00004fa2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FA2 25740 bytes
SHA-256: 057df6799b20fabb08c658b30733ced6ebf0a019331fb27cccb980386b2b2e2f
font_01_sfnt_off00008b4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B4F 18588 bytes
SHA-256: 89351fef1705b707b7d597cb9a953662def24cee483548aa51c47afb6d4665f2

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