Malicious PDF — malware analysis report

Static analysis result for SHA-256 a30d33b11c4da402…

MALICIOUS

PDF

33.6 KB Created: 2021-07-02 01:51:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9b60d2a006ac521d3b8dc85d309f97e5 SHA-1: aed564ddc13dbf3b4b6de6ce62c9e67aa991e92e SHA-256: a30d33b11c4da4027bd84a1614117954730fb27ea2cccc02f339c629290abd2a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and text referencing 'free Robux' and 'game hacks', designed to lure unsuspecting users. It directs users to a malicious redirector URL, http://netcdn.co/app/431946152/1-robux-every-second-for-free-game-hack, which is flagged as malicious infrastructure. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/431946152/1-robux-every-second-for-free-game-hack In PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-mods-hack-apk_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/jurassic-world-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-script-injector-for-roblox-v3rm_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/shiny-charmander-easy-in-pokemon-brick-bronze-without-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/royalty-free-roblox-music_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-on-laptop_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/games-on-roblox-where-you-win-a-free-stuff-2021_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-in-prison-life_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-get-rainbow-wings-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/robux-codes-unused-free-robux_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-zall-site-free-robux_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-rocitizens-hack-script_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/forstakenfree-robux_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-hack-someone-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/money-cheats-in-roblox-bloxburb-beta_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-roblox-fast-load-v3rmillion_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-bloxburg-building-hacks_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-robux-with-synapse_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-robux-100-real-2021_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/hack-robux-cf_GM431946152.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
font_00_sfnt_off00002ccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCC 22164 bytes
SHA-256: c806a79526b524b1d54e2168a74ebbc5de4edf0c6e6ea8a359f8ac57094daabf
font_01_sfnt_off00005dd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD8 19292 bytes
SHA-256: 5ec2e35d00520866b5dde04a34ddfdd2ee68a5d436331ecc66d7ba0233bc2940

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