Malicious PDF — malware analysis report

Static analysis result for SHA-256 885745178a9fba18…

MALICIOUS

PDF

47.6 KB Created: 2021-05-19 00:33:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c6f70ac20e8f66813d180dcb575d32e7 SHA-1: d278bb7235731e2dd0571a2c42e06701cd9a6f54 SHA-256: 885745178a9fba18c518ed4b24860391b93801e974779a0b4015cf19f77f1977
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one pointing to a known malicious redirector infrastructure associated with game hacks and cheats. The document body and heuristics indicate a lure for "Coin Master Hack 2021" to entice users to click the malicious link. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for JavaScript execution to facilitate redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/coin-master-hack-2021-ios-download-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-spin_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/easy-robux-generator_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C5 30004 bytes
SHA-256: 73d8cd4844fa91924ac8ac9c70683c6271ddfc52b1378f87bc42dc4db9d12478
font_01_sfnt_off00008c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C33 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000961e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x961E 18696 bytes
SHA-256: ceb680829dad7f80d00f8486b75e8ff3e84f80ef9ad40f876ac7c87b6bf6814b

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