Malicious PDF — malware analysis report

Static analysis result for SHA-256 56116a7b4875a0b6…

MALICIOUS

PDF

34.5 KB Created: 2021-07-07 15:14:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 87370a9aef0a433bc08d51bba98de11e SHA-1: 5339e124bf7bb3773068299e9049be62eababe2b SHA-256: 56116a7b4875a0b606ed92002d96b3942808ab60cd6f871c57a68ddaaa205b48
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 0.9980

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 http://netcdn.tw/app/479516143/minecraft-alt-accounts-free-game-hack PDF link annotation
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/how-to-get-robux-on-roblox-free-2021_GM431946152.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/robux-free-online_GM431946152.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/give-me-free-robux-google_GM431946152.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/hack-para-volar-en-roblox_GM431946152.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/oprewards-get-free-robux_GM431946152.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/free-roblox-accounts-2021-v3rmillion_GM431946152.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/free-roblox-clothing-hack_GM431946152.pdfIn PDF document text
    • http://belajar.maalfalaahiyah.sch.id/__statics/gudangsoal/files/cute-free-roblox-clothes_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_off00003481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3481 21876 bytes
SHA-256: 72c4e18d600970a61dbbfdc72ee122ab38345f48d7b26846b97c3b48a54b0e0e
font_01_sfnt_off000064b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B8 18212 bytes
SHA-256: 79167943b664c57080b7558835257354cfd56d5428e37e62e961791e2f613c27

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