Malicious PDF — malware analysis report

Static analysis result for SHA-256 52f9663fc82c284b…

MALICIOUS

PDF

38.7 KB Created: 2021-05-20 07:22:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cbe15b2aa5476463108c63323eec0080 SHA-1: efdb005a8853dfe27c81f0dbfec38679a03b6eb4 SHA-256: 52f9663fc82c284b5e1a8da1f8f1228609606cfa96630df303f4e0b14c964930
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically advertising 'game hacks' and 'free generators'. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt, likely serving as a lure for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/835599320/tiktok-free-3d-model-game-hack In PDF document text
    • https://www.belgium-archery.be/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://www.belgium-archery.be/images/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/dailyrobux_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • https://www.belgium-archery.be/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/moonactive-coin-master-free-spins_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00004065.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4065 23432 bytes
SHA-256: 02ea7e8e887a30b61090cd86973137e6fb199444abba1cf08f0188f39ea827a2
font_01_sfnt_off000075ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AE 18072 bytes
SHA-256: 0a66adfb8dde27ad1716137a538422f2b77efb0b1304d39a2639b272d649a4d4

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