Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cf03dae3a37670b…

MALICIOUS

PDF

44.5 KB Created: 2021-05-11 18:03:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 72fbd947cd5f9a1c712a97ab0c1fa9fa SHA-1: 9228cc77e3a72897c9d169b14e71acf110702ef4 SHA-256: 8cf03dae3a37670bfc4f9f1a8228018662c95aa0c04e053ac1c6178e8827c404
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and embedded text promoting 'free Robux' or game hacks, directing users to a known malicious redirector. The document's content and heuristic firings strongly suggest a phishing or scam attempt designed to lead users to 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 https://netcdn.xyz/app/431946152/how-to-get-free-robux-com-game-hack In PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/weird-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/freecoins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2-bondowoso.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-on-mobile_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004f89.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F89 25840 bytes
SHA-256: b659f525ebdf677defe0aebf51b610d53450d514fddaf426370c567e967ffcf8
font_01_sfnt_off00008b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B1C 18544 bytes
SHA-256: 592d037155b891bbb2f70d3f14a8a619d2fef64eb32d8f0fc2e46f6e8e925839

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