Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5dddb71dd7d7d05…

MALICIOUS

PDF

46.7 KB Created: 2021-05-15 06:05:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8b7e93652b6891e22f2e4ae136156ed9 SHA-1: bcc1bb1a58c05461c541a087df3476e8b4c37db3 SHA-256: b5dddb71dd7d7d05a7358559206c810af87d726e103f08158a98a07248aae27b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to entice users to click on embedded links. The primary link directs to a known malicious redirector, suggesting a phishing or scam campaign. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful content or further stages of an attack. The document's content and heuristics strongly suggest a social engineering tactic to compromise users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/431946152/how-to-get-free-robux-without-downloading-apps-2021-game-hack In PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-100-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/hack-client_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/roblox-printables-free_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49B2 25164 bytes
SHA-256: cd890788b86a7dd959798006b16ba08cd50bd38df7e1e12c3c3ea2ee29ee9fc4
font_01_sfnt_off000083fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83FC 2872 bytes
SHA-256: 5a38050e56bfed6ba013c4835499ae05f4b57b22e606c9172dd4bc2ae7fd1207
font_02_sfnt_off00008db8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB8 20276 bytes
SHA-256: dfaf102e4a8660aec521ea97dbe5e1677fef1ca2e266cad45ab84be3fc58cd38

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