Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b69e787930ccab…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 18:43:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ef10c2f0381cf771a063338c2ff8f3b3 SHA-1: 6ea3602f46f13071f84057e968036897790284a0 SHA-256: 88b69e787930ccaba7ed8bc1c3910f7b3ca8a2d6c9292ce159201720d36a623d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'free Robux' or game hacks. The document body and embedded URLs strongly suggest a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood 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.tw/app/431946152/how-to-get-free-robux-com-game-hack In PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/dife-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/free-stuff-on-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/info-de-el-hacker-de-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/half-guest-and-noob-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-hack-paintball-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/ben-10-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-get-roebucks-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/descargar-roblox-hackeado-robux-infinitos_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/dungeon-quest-roblox-hack-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-song-id-young-wild-and-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-free-vip-server-ro-ghoul_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-get-free-robux-easy-hack_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_off000031f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F7 22748 bytes
SHA-256: 663b46901b7f7c1e8c1322aa5f514ec1718f248b7edd386bc098778dba6be3aa
font_01_sfnt_off000064d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D4 19244 bytes
SHA-256: 2a82a6b4e88d45175d2fe2eaf287537d274cffbbed35dd56f8b6e767c09dfc54

Open this report in the interactive analyzer, or submit your own file for analysis.