Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e4fc7a847e66fc5…

MALICIOUS

PDF

43.9 KB Created: 2021-05-12 11:37:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0879d04d1c49a42c0234f4c62ad8325b SHA-1: e28f5d3d9e98e7a470a8e8f3d044d2589517bb38 SHA-256: 4e4fc7a847e66fc53f270da218372a55c27172666666f5a54de76f7d0606143e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically advertising "game hacks" and "free Robux" to lure users. The primary link, https://netcdn.xyz/app/431946152/how-to-hack-robux-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and link redirection strongly suggest an attempt to lead the user to a malicious website, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/how-to-hack-robux-game-hack In PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/roblox-executor-free_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.spapanggilanjogja.com/ckfinder/userfiles/files/gain-robux_GM431946152.pdfIn PDF document text
    • https://www.bandicam.comIn 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_003_off00004cdc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CDC 26332 bytes
SHA-256: 71e868c01101772510911a67fc47745e560aefa1d86e0a055a79104cbf26e12c
font_01_sfnt_off000088dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88DD 18412 bytes
SHA-256: 799ae8847f356c5b4d712fc876b96dd84d848442331064266ecb6e470ae97e62

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