Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddff04f45e8e0067…

MALICIOUS

PDF

35.6 KB Created: 2021-07-01 02:42:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e15f5c2900e91b95db249d02b2f46aea SHA-1: 50c10114b06201100b7a7b4a858ecde11ae1dd3d SHA-256: ddff04f45e8e006736ae1088fa31a7e3b6eb038396a9d419d9f4bf6d74f4d693
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF document contains multiple links, including one identified as a malicious redirector, that lure users with promises of free game currency or hacks. The primary link, http://netcdn.co/app/431946152/how-to-get-free-robux-easy-no-wait-game-hack, is associated with a game hack lure. The document body and heuristics confirm the intent to redirect users to potentially harmful content, likely as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-robux-easy-no-wait-game-hack In PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/roblox-obby-cheats_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/free-stuff-roblox-audio_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/cant-press-custromize-button-on-unjailbreak-hack-roblox_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/get-free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/roblox-com-free-dominus_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/how-to-recive-free-knives-for-murder-mystery-on-roblox_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/roblox-free-magma-fiend_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002ff3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FF3 23424 bytes
SHA-256: 2c3f6e01b8c8dd418996c675f255a9a25444badea45cce7289d65fb29b19d75f
font_01_sfnt_off000064e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E2 19480 bytes
SHA-256: 4987abf9ef97c997f59d998f69b4117a754d4f793e8f5bbd2b4231ebf7fcca64

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