Malicious PDF — malware analysis report

Static analysis result for SHA-256 78280400d97c1b1d…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 00:38:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1e2b2129924ca248e54880797ef04558 SHA-1: 8bf3feb4ef51f633a8c45cae586ac16c6de05883 SHA-256: 78280400d97c1b1d924ec1e567bafe9d229b5361b4a77d26739c0298b30053b1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and generators to entice users. It contains multiple embedded URLs that point to redirectors and other potentially malicious PDF files, indicating a phishing or malware distribution scheme. The ML classifier strongly flagged this sample as malicious, supporting the observed redirection and lure tactics.

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.tw/app/431946152/free-roblox-generator-game-hack In PDF document text
    • https://pspmrsmbpulau.com/opac/repository/exploit-roblox-2021-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/free-tik-tok-quiz_GM835599320.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/cheat-roblox-lumber-tycoon-2-btools_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/earn-robux-online_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/edit-roblox-game-code-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/roblox-hacks-to-get-in-people-acounts_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/free-robux-codes-2021-march_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/roblox-jailbreak-hack-2021_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/can-pokemon-go-free-account-2021_GM1094591345.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/give-away-game-in-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/how-to-get-free-spins-on-coin-master-2021_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
font_00_sfnt_off0000310a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x310A 22232 bytes
SHA-256: d0cdfbc2c3f3040027101866bc5291e71461dbce7f4527c55087e94189a4f63d
font_01_sfnt_off00006276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6276 18752 bytes
SHA-256: 7a858cebcbb43583261fc6928f7757faac90e9e6cc2d406a534a148fe309e18e

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