Malicious PDF — malware analysis report

Static analysis result for SHA-256 eebb88c85718f745…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 22:34:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6c77b2e94749c870440ed00b9a9299e2 SHA-1: 9f3247023c5864a47c7e82a00543f6cf7a74a500 SHA-256: eebb88c85718f745bbadfba3474cea099a8456c679640064a63a6805e1b4a41b
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of numerous redirector links suggests a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a lure to download potentially malicious content or visit further compromised sites.

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.tw/app/406889139/card-hack-for-coin-master-game-hack In PDF document text
    • http://digilib-unirow.ac.id/repository/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-hack-roblox-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/hack-lucky-blocks-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/zeus-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/roblox-g_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-gett-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/synapse-level-7-exploit-crack-download-free-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/pokemon-go-free-balls-2021_GM1094591345.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/roblox-how-to-have-free-obc_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/websites-that-give-free-robux_GM431946152.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_off00003029.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3029 23364 bytes
SHA-256: a6d5ee7ec631add924ca64ba8172e1cf2051aeae5c1bfe59750aa15379175f8f
font_01_sfnt_off000064ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64FF 18340 bytes
SHA-256: 7e1b9b7afe785ea56b208f87ef5cc21a9c6d298372275f75dfcc7ab1e7e9a91c

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