Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4654fdc649bdc83…

MALICIOUS

PDF

43.7 KB Created: 2021-05-17 12:11:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 939b43154630e3aaa43012e38a53907e SHA-1: 07ae02d5108e162fd91f2017299675423a1cc88b SHA-256: e4654fdc649bdc838d2c57178f7aab5832f7fa45c03b5435f9f088cc4c0145b6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector infrastructure, specifically advertising 'Coin Master Free Coins and Spins'. The presence of multiple links to similar lure content suggests a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-free-coins-and-spins-today-game-hack In PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn1pnd.sch.id/__statics/gudangsoal/files/coin-master-hack-pc-download_GM406889139.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_off00004f26.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F26 24924 bytes
SHA-256: 873d3a41eded31c964865f97e3c6a3f4ed090cc81c0dcb451ce352dde87e587c
font_01_sfnt_off000088cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CB 18240 bytes
SHA-256: 4e9460ee7c922f2330eb91d2df2ab210a384988491c8b06196f83513902e5b38

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