Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a3d6128b72a8c47…

MALICIOUS

PDF

49.4 KB Created: 2021-06-08 22:29:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 46268b7a75f757fa20a5c55c88f667a1 SHA-1: 05397c579d9c021694ece16bc31170ae01d897d8 SHA-256: 6a3d6128b72a8c479387cec8df96d23cb69f106a342f64c34911ae6c2f47fc21
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to known malicious redirectors, disguised as 'game hacks' and 'free generators'. The primary lure is related to Roblox game exploits. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it is designed to exploit vulnerabilities or trick users into navigating to malicious sites, likely for further payload delivery or phishing. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/how-to-hack-and-on-roblox-on-muderer-mistery-2-game-hack In PDF document text
    • http://pia2000.net/images/earn-robux-websites_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/robux-converter_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-face-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/can-pokemon-go-free-evolution_GM1094591345.pdfIn PDF document text
    • http://pia2000.net/images/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://pia2000.net/images/pokemon-go-free-zip-code_GM1094591345.pdfIn PDF document text
    • http://pia2000.net/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/roblox-com-free-download_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/static-moonactive-net-free-spins_GM406889139.pdfIn PDF document text
    • https://www.roblox.coIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000506d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x506D 26632 bytes
SHA-256: d571607b60d5ad342bfcf4409b8673f341319b1846cfaed531e609ecabfa0465
font_01_sfnt_off00008e51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E51 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009af9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF9 19384 bytes
SHA-256: e43a40b92677f8a23a9c678f2bbc7a148f748055385ad701de0195a6db37a0da

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