Malicious PDF — malware analysis report

Static analysis result for SHA-256 5208d415566f2f07…

MALICIOUS

PDF

34.9 KB Created: 2021-07-01 14:22:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 78b91937b97e5b2207f1f3676d80990a SHA-1: 7df11426f254432733de5eaf6cb704e777f33816 SHA-256: 5208d415566f2f07e0629317bd69917d5e98fe346efa3620a7e0dc9a913d3c86
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary redirector URL identified is http://netcdn.co/app/431946152/give-me-free-robux-2021-game-hack. The document's content and embedded links strongly suggest a phishing or scam attempt designed to trick users into visiting potentially harmful websites. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/give-me-free-robux-2021-game-hack In PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-10m-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/tiktok-free-fans-2021_GM835599320.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hack-kill-roblox-phone_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/kachifpro_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-free-hats_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-gift-codes-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/mpgh-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-robux-no-human-verification-no-download_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-without-survey_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_off00003002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3002 22392 bytes
SHA-256: 3ccf4ef6edadd17c612d0f0d6771609b2f973d7b5a2366bbdaa05edab2390a87
font_01_sfnt_off000061fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FA 19548 bytes
SHA-256: cc580eb1cc1410c235c7ca45ef3db9daff4801618c55b1574e94c9ba9650065c

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