Malicious PDF — malware analysis report

Static analysis result for SHA-256 c509852911efec23…

MALICIOUS

PDF

42.8 KB Created: 2021-06-13 20:54:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 58804e9be07adcf84c943157a9950b4b SHA-1: 03872a9eea6d3777957285bfb12319fa68cbdc1c SHA-256: c509852911efec23c163bed5bec93c1883946ea89052c1531907507c4a69b326
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs strongly suggest a phishing or scam attempt to trick users into visiting potentially harmful sites. While no scripts were explicitly extracted, the presence of malicious links and the nature of the lure indicate a high likelihood of further malicious activity, such as credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.co/app/431946152/free-robux-tix-generator-download-game-hack In PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coins-master-hacks_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-codes-june-2021_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/roblox-jailbreak-noclip-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/wings-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/how-to-get-free-robux-without-a-generator_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/exploit-roblox-free_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/vip-roblox-free_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/haktuts-coin-master-free-daily-spins_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_003_off000049c0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C0 24836 bytes
SHA-256: dfe01dac34c3cea3bfc08736f015450720847234ed288de334146aa12dab576f
font_01_sfnt_off00008251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8251 19048 bytes
SHA-256: 4bf533c2144b5beb02d1d18e610e93b475bd8d48253544909c7d97fd1830a61b

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