Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c5ca0eea39447d…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 11:48:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 90738173566a1b80d38c58ad8a2b50e4 SHA-1: eba90f99bcc692ab837be73c0913d4dad0a935e5 SHA-256: 68c5ca0eea39447dd2e9ad3c44e026464e612361523ef927bee8eab3f8402ddd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free currency' lures. The primary link identified is http://netcdn.tw/app/431946152/how-to-hack-someone-on-roblox-game-hack, which is flagged as a malicious redirector. While no scripts were explicitly extracted, the document's structure and heuristics indicate it's designed to trick users into visiting these malicious URLs, likely as a first step in a phishing or malware distribution chain.

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/431946152/how-to-hack-someone-on-roblox-game-hack In PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-speed-hack-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-roblux-for-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-no-very_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-android-no-survey_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-cheap-pubg-uc_GM1330123889.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-roblox-redeem-codes-no-survey_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/inside-the-world-of-roblox-pdf-free-download_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-spins-generated-from-coin-master_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_002_off000030de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30DE 22924 bytes
SHA-256: 9b228011628c7dad9877a22bcdb6b232579a6844632a37488cfe3b82a560544d
font_01_sfnt_off00006411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6411 19080 bytes
SHA-256: 963276ac3658a4f1303280410bd3aafd1a833c38ea79ed0af769875644ea58f7

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