Malicious PDF — malware analysis report

Static analysis result for SHA-256 892d8390a364f670…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 05:41:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4a52f3e3fa8d82524328f6e716298ea1 SHA-1: 6ee612d1aa6487590640acea913735ba418415d4 SHA-256: 892d8390a364f6706e53788b929be99d0cb4e5b465696807872e6b399bbee526
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, with a primary URL identified as a malicious redirector. The document body and heuristics indicate a lure for game-related hacks, specifically targeting Coin Master and Roblox, which is a common social engineering tactic. The presence of a malicious redirector suggests an attempt to lead the user to a site that may host further malware or phishing content.

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 http://netcdn.tw/app/406889139/coin-master-hack-tool-game-hack In PDF document text
    • https://opac.heritagejkt.org/repository/roblox-avatar-customize-free_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-codes-and-obc_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/minecraft-menu_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/the-labyrinth-roblox-cheats-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-roblox-deadpool-suit_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-gear-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-free-bc-on-roblox-pc_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-roblox-face-girl-blushing_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/vehicle-simulator-roblox-how-to-join-game-for-free_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-free-faces-on-roblox-youtube_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-granny-speed-hack_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-free-gold-cards_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_002_off00003090.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3090 23168 bytes
SHA-256: f0bbdae7fd99a6ad76702d55accf4feef38ecb6f1db168c0f4cd17f682e0178c
font_01_sfnt_off000064b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B8 18080 bytes
SHA-256: d73e4cba5eae4963415d942f6085a7e87ee20f191a57df75a2e3d628f5bdbb21

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