Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6ba58347ad6a1cd…

MALICIOUS

PDF

48.0 KB Created: 2021-06-10 14:55:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e5873030a91733e1e3e280091f7e5d62 SHA-1: 726178dd5201beefb925c5e44dbdfdbee1a16601 SHA-256: c6ba58347ad6a1cd123d0884104f77d220dfb91ea3cf33b4aa868d010feb9dee
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The primary malicious link identified is https://netcdn.tw/app/431946152/free-card-codes-roblox-2021-game-hack. The document body, though heavily obfuscated, contains references to this URL and other similar PDF files hosted on peterbarsony.com, suggesting a phishing or scam campaign. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/free-card-codes-roblox-2021-game-hack In PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-robux-hack-meme_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000505a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x505A 27832 bytes
SHA-256: 1941832dde3efd054a0a6313551ea85957ea282a4c4dcb9de045c39975f1130e
font_01_sfnt_off00008d9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D9A 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off0000973a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x973A 18752 bytes
SHA-256: 399c0b0b02af21501d8bd87108339b36607b3cdc030bc928a5f8d111cd8b58d4

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