Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4a9310e138d7956…

MALICIOUS

PDF

47.7 KB Created: 2021-05-14 04:18:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 48f6a27354816023c97245699f7f0d47 SHA-1: dedcac7a02cdb227ac4f5dc7425ce0126f47c999 SHA-256: f4a9310e138d79563491745d37ab7c04a7d0241b371d1e16cda887a25e918d31
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 0.9013

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/hacking-apps-for-roblox-game-hack PDF link annotation
    • https://elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/optifine-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • https://elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • https://elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-2021_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049fc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49FC 26176 bytes
SHA-256: 4e9ae9da0945a556f65340146ae92860bf30ba63a24364e8e3ba901a0420e91d
font_01_sfnt_off0000856a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x856A 4788 bytes
SHA-256: b6b863900e31748638ede4de859e83ad8e7496c6ad52174dbb2c0dc0894620d9
font_02_sfnt_off000095f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F2 18932 bytes
SHA-256: a12a900017875743d46ad83be25c63e25fa00e3014bd6d438c4b8f248ab77b0b

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