Malicious PDF — malware analysis report

Static analysis result for SHA-256 df915c5dfa1edf9c…

MALICIOUS

PDF

34.9 KB Created: 2021-06-18 23:22:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dc8aa881537982ce66abdfa5ee9c8444 SHA-1: a4d5b0e3de75663ed21077a55c6af48a0c7636b5 SHA-256: df915c5dfa1edf9cf2cdfbfd5af8760ee9723561a2734c5b9049cb8681145864
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for free game hacks and redirects to a known malicious URL. The document body and heuristics indicate a phishing attempt to trick users into visiting malicious sites. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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.co/app/431946152/how-to-get-robux-for-free-hack-easy-game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/link-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/robux-hack-xbox-one_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-have-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/why-is-tiktok-free_GM835599320.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/pokemon-go-free-clothes-code_GM1094591345.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/outfits-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/without-pokemon-go-free-pokeballs_GM1094591345.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-rixty-codes-2021_GM431946152.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
font_00_sfnt_off00003155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3155 22340 bytes
SHA-256: 1da919af577abf8e2a70de4737a114b38ccc0eb20c9de37bbdac25e7ed26e556
font_01_sfnt_off0000623f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623F 19336 bytes
SHA-256: 96bb44af7e74a3c4ba26e56fa24befef32a1a1f0e4d426e247fc0f7fccf2f9d0

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