Malicious PDF — malware analysis report

Static analysis result for SHA-256 c555b07091d1494e…

MALICIOUS

PDF

46.1 KB Created: 2021-05-12 06:12:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bb7f538a8200f684158c8d1334e0dfc6 SHA-1: 5d02f0400a578ce3f8fa728267aacd97eec00ff1 SHA-256: c555b07091d1494e769e6ff3f7842fc8567c49f6454672b1e09c9e716dbae476
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for a "Coin Master Hack" and includes a critical heuristic firing for a malicious redirector link. The document body and embedded URLs suggest a social engineering attempt to trick users into downloading potentially unwanted or malicious software. Although no scripts were extracted, the presence of malicious links and the lure indicate a high likelihood of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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-xyz-apk-download-game-hack In PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://new.man2boyolali.sch.id/__statics/gudangsoal/files/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cd2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CD2 24712 bytes
SHA-256: a676aafcf7dd43a84661e91bd5aaf7846f4fdcf8cea626d49c9f83ef91c1e60a
font_01_sfnt_off00008594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8594 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F7F 18964 bytes
SHA-256: 42a942681b50248dcccc5fc85bca355d05b372000a3cb49c351c6f0dce64ffde

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