Malicious PDF — malware analysis report

Static analysis result for SHA-256 50461cf344d3ed1a…

MALICIOUS

PDF

36.7 KB Created: 2021-05-12 11:42:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b3efafed9645ab41deaf90e3a5654347 SHA-1: 92f0079d558553e9e398914325a33cb8985e1203 SHA-256: 50461cf344d3ed1a50c6259a5f232d7b0cbc82990717058b6ee38f9ed9210ee3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier strongly indicates maliciousness, and the embedded URLs are known to be associated with malicious redirectors. The document body, though partially obfuscated, contains references to these lures and additional URLs, suggesting an attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • 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.
  • 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/431946152/microsoft-robux-game-hack In PDF document text
    • http://library.darmaagung.ac.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-bobux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/open-coin-master_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047fc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47FC 26088 bytes
SHA-256: 88fdb2d69402a64289cb682d3321a6368ac721ab312819e5f6f8c5ec95dfd82b

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