Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0737f2f3b1ade3c…

MALICIOUS

PDF

51.2 KB Created: 2021-05-14 12:11:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 326f0969f30d7b732ea2947934e322d2 SHA-1: 7b9f3667d4f5c65dc3dc19251376f45490a444d3 SHA-256: c0737f2f3b1ade3c36cde44e0d83f2224cd47fe01dbe7b484a16d200ffeae9c2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8646

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/easy-robux-hack-game-hack PDF link annotation
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coinmaster_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c7a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C7A 26028 bytes
SHA-256: 2ec623b661a1dec1313b0d31005332d00cf1a600c33ac138e90b53ffb1a35811
font_01_sfnt_off0000897f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x897F 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off000094a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94A4 6768 bytes
SHA-256: fa93de321190668b294ff46149e4b98ac349b4fd022dcee9ecd964f7f59f3f9a
font_03_sfnt_off0000a4e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4E3 18428 bytes
SHA-256: 2bceebe5c1993dbcd4316f947943b347169ed843d74f7d3766fe916d90107923

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