Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddcca26f010e3a12…

MALICIOUS

PDF

41.7 KB Created: 2021-05-15 17:08:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c229b7c48e1181b4b02825b1c0570c46 SHA-1: ad458e44c8bcc192473b72835b58da5e71f935a9 SHA-256: ddcca26f010e3a1248a000117b73a58862a07ef02f126263eff996f2cf9750c8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a call-to-action phrase, strongly suggesting a phishing or malware distribution attempt. The ML classifier also flagged this PDF as malicious with high confidence. The document body and extracted URLs indicate a lure for free Robux or game hacks, likely leading to a download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/can-u-get-free-robux-game-hack In PDF document text
    • http://berntfoto.dk/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/robux-gainer_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-connection-lost_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-free-stuff_GM406889139.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_003_off0000466d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x466D 24948 bytes
SHA-256: 6f047879c08051f42bc951f884de1c18642c9a04b2e29492d4e3fa4e071ddad5
font_01_sfnt_off00007fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD5 18532 bytes
SHA-256: 35bb0f01f69d1b5e790ed5f4c0eeb98998139975dc1eb58b588dc01b9002bbc1

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