Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbede0f6f9a6db33…

MALICIOUS

PDF

52.3 KB Created: 2021-06-08 18:34:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c386352323b6fb47a0508dbfa9f78db9 SHA-1: dcd620054ef27797f04b39d19f800497585d8179 SHA-256: dbede0f6f9a6db33ba47debbb0ee1a16f5d229d099ba0ba31b08526d4bd06a81
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting 'free generators' and 'game hacks' for popular games. The primary lure URL is https://netcdn.tw/app/431946152/get-free-roblox-robux-on-therobuxapp-com-game-hack, which is designed to trick users into clicking through to potentially harmful content. No scripts were extracted, but the document's structure and embedded links strongly indicate a phishing or social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9657

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.tw/app/431946152/get-free-roblox-robux-on-therobuxapp-com-game-hack In PDF document text
    • http://slims.abulyatama.ac.id/repository/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coins-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/real-hack-for-coin-master_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52F1 26732 bytes
SHA-256: 6a8bc1ccc74ef33f778ae79cfa3af6a88b3a5c7d2c4db342065aec676f1726bd
font_01_sfnt_off000090bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90BF 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00009a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A5A 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off0000a76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA76B 19020 bytes
SHA-256: 7f1ec0a09b8eccebe1b7a863c825880cce446b8b0404623b371ab6461476b721

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