Malicious PDF — malware analysis report

Static analysis result for SHA-256 9892caf54ff8c772…

MALICIOUS

PDF

36.8 KB Created: 2021-05-20 15:52:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4fa80f06b030bfd8050b31dddddbca31 SHA-1: 7e8f94cb5c5609d1acfc08f3536568bda204bf01 SHA-256: 9892caf54ff8c7729028afb8877516c8982d8cf1dbf74cd452ce04b27fd7ca14
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and websites offering 'game hacks' or 'free currency', indicating a lure for users to download potentially malicious content or engage in phishing. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the embedded links and the nature of the lures strongly suggest a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/431946152/can-you-give-me-free-robux-game-hack In PDF document text
    • http://interpretation-dessins-enfants.net/images/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32F7 25716 bytes
SHA-256: d7742310203a489daa351031f3a1e60002458067fa8f1f11275e1d349b77b65c
font_01_sfnt_off00006ce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE3 18836 bytes
SHA-256: f7ef8038c45e68508aae9bb0b63a3af28c92eee5ac21090050d85675c825651a

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