Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d01f506343aef0b…

MALICIOUS

PDF

49.1 KB Created: 2021-06-03 13:03:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d6583cffc7fe96733d3e6468387ed6c8 SHA-1: 60b75dd8180b091911636078511d104a80a59a91 SHA-256: 7d01f506343aef0b62ce70742eab791fea93c8151e903fa556b14d52a4eae0ec
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 brand-impersonation credential phishing and a fake-CAPTCHA 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 0.9796

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
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.online/app/431946152/roblox-moderators-game-hack.
  • 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.online/app/431946152/roblox-moderators-game-hack PDF link annotation
    • http://opac.ekonomi.up45.ac.id/repository/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/pubg-uc-100k_GM1330123889.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/tiktok-free-likes_GM835599320.pdfIn PDF document text
    • https://rblx.landIn 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_004_off000050d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50D2 27520 bytes
SHA-256: 797856dab631370aeedad247e1844c7ecddf1a7da59e4d28f4e1524ef7a8cf89
font_01_sfnt_off00008f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F62 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009c74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C74 18488 bytes
SHA-256: 0988d84c654cad7fd64df8ed03d3555b2dfd5e63404faa7131ff859ccef1ee1c

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