Malicious PDF — malware analysis report

Static analysis result for SHA-256 162496d76f2579bf…

MALICIOUS

PDF

45.5 KB Created: 2021-05-12 20:32:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ebe85159a3c19b6372149ba97121ce01 SHA-1: 2159f4f35d757d9ebcdc1f856bd1ff0343ab9ec2 SHA-256: 162496d76f2579bf6350f804e85a87e8cec16f49c07edec87df3b3332c43d325
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure and a password-protected-archive lure. 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 0.9507

Heuristics 6

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/406889139/how-do-i-get-free-coins-on-coin-master-game-hack PDF link annotation
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://www.elearning-masalbidayah.net/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot-today_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_off00004c08.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C08 26236 bytes
SHA-256: 5b952dee27558ddec2f02fdeaa2e2610f24ddfa63a33026a0bd5e87555cf95b0
font_01_sfnt_off00008681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8681 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9033 18044 bytes
SHA-256: b0174b7273dd3697a995ce39da4c1069e2dc5f33a377c5b822b1ade397e01d0c

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