Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff6b9ab842c7b8cb…

MALICIOUS

PDF

45.2 KB Created: 2021-05-14 02:00:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e3e08318bbbf4d20ffffa2fe95e47b59 SHA-1: 570a780695c6384417763fea7524c51b701101a9 SHA-256: ff6b9ab842c7b8cb55a916d79d93e933ba5ce6f8e143a3546e8c08d194f4c396
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains, specifically advertising 'game hacks' and 'free currency' for popular games. The heuristic PDF_GAME_HACK_REDIRECT_LURE strongly indicates a social engineering attempt to drive traffic to malicious infrastructure. While no scripts were directly extracted, the presence of embedded URLs and the nature of the lures suggest a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/hack-spin-coin-master-2021-game-hack In PDF document text
    • https://de-licht.com/image/data/files/how-to-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-800-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/robux-gratis_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/rbx-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://de-licht.com/image/data/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • https://de-licht.com/image/data/files/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-100-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/fast-robux-online_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-spin-hack-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_off00004a2b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A2B 25744 bytes
SHA-256: e482b21c5082ae0bd82b262f3787f9d66e6d0d80d763d033b31fde17993e110d
font_01_sfnt_off00008369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8369 18296 bytes
SHA-256: 7c152fcbec6031fae265a28d35039b65ee2a7a9d607d67cc07384d82b99704d1
font_02_sfnt_off0000a59d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA59D 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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