Malicious PDF — malware analysis report

Static analysis result for SHA-256 8894a8bb3d67f5c6…

MALICIOUS

PDF

35.6 KB Created: 2021-07-01 07:02:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 176bc4e572d5fd50b54345deb147bc22 SHA-1: a3690c378b53d0eb0f6c9a6e3ac7537dc88f388b SHA-256: 8894a8bb3d67f5c676700c42a158626c01739216253b40994760575a869755a5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to external websites, including a critical redirector identified as malicious. The document body explicitly mentions 'free generator' and 'game hack' lures, aiming to trick users into clicking these links. The presence of a malicious redirector suggests the document is designed to lead users to a site that will likely host further malicious content or exploit.

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/406889139/link-for-free-spins-on-coin-master-game-hack In PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/ccv3-cheats-for-roblox_GM431946152.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/game-for-have-a-robux-free_GM431946152.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/robux-free-c_GM431946152.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/free-robux-pain-exist_GM431946152.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/how-to-get-free-robux-and-obc-2021_GM431946152.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/roblox-always-day-hack_GM431946152.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/roblox-sharkbite-hack_GM431946152.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/how-to-hack-thru-walls-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • http://wavestelecom.net/uploaded_files/userfiles/files/roblox-free-skin_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000343d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x343D 23156 bytes
SHA-256: 3343c095702191240e4c45f085e1ff24d5666317a5a0c740fc26e5c859374cd5
font_01_sfnt_off00006895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6895 18344 bytes
SHA-256: f56b0ea85f0f4ceaa4b3226630b5e27c33b435ed9466ab3582cda34df5208c0a

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