Malicious PDF — malware analysis report

Static analysis result for SHA-256 7570fea4db354cf8…

MALICIOUS

PDF

50.0 KB Created: 2021-06-07 14:19:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5f7761cc6263e149558348a34b72ce67 SHA-1: 1b2893d9a2f6a55f5f3ec55def3f980988e745c0 SHA-256: 7570fea4db354cf8c5380013c099d740f709ed25a641de4fdc92a727c1646a65
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 0.9796

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.tw/app/431946152/free-robux-no-verification-no-survey-no-offers-game-hack PDF link annotation
    • http://www.access-coiffure-tours.fr/images/roblox-free-hats_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/roblox-sued_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/pokemon-go-free-yourself_GM1094591345.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/robux-hack-no-human-verification-for-android_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/minecraft-free-download_GM479516143.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/www-robux-com_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/coin-master-hack-apk-ios-download_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/john-doe-roblox-hacker_GM431946152.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_004_off00005518.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5518 24320 bytes
SHA-256: 50bd5a3e128c4d1178fa2cc7833e4bb1e185db8bc006df492a9aad326c62d13d
font_01_sfnt_off00008cf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF7 7448 bytes
SHA-256: a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90
font_02_sfnt_off00009eda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EDA 18892 bytes
SHA-256: 41814c22b9cac46e7a6b904e5569b95474a6d46d0c914dee7b6a4d0c1597373a

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