Malicious PDF — malware analysis report

Static analysis result for SHA-256 34fae176fb1d7c1f…

MALICIOUS

PDF

35.0 KB Created: 2021-06-19 15:10:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2ec831e54ad5e706e82f0cba05c64464 SHA-1: 6a8d7fa94b01a3d3c2610d6eacdfada7a9e190dc SHA-256: 34fae176fb1d7c1f2e1ad4fe4d1445e8a23f2c00fc2d9d6285edd3cdc6aac53d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on what appears to be a game hack or free currency generator. The primary link, http://netcdn.co/app/431946152/roblox-free-robux-card-codes-2021-game-hack, is identified as a malicious redirector. The document body and embedded URLs reinforce this lure, suggesting an attempt to drive traffic to potentially malicious sites or download further payloads. No scripts were extracted, but the overall pattern indicates a phishing or scam attempt.

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.co/app/431946152/roblox-free-robux-card-codes-2021-game-hack In PDF document text
    • http://ycstamping.com.tw/image/data/files/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/free-robux_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/how-do-u-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/roblox-how-to-get-free-faces_GM431946152.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://ycstamping.com.tw/image/data/files/how-do-i-get-free-robux-now_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
font_00_sfnt_off0000316d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316D 22176 bytes
SHA-256: 2e0e24444b595e319dbddb79487c27a40d78cf288088d9cb2f3046fcab6b3c24
font_01_sfnt_off000062b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B8 19364 bytes
SHA-256: 4fe4a754bd22862a1fe640c26edf429020d968b5c1b2ff6bff5394eff008c37a

Open this report in the interactive analyzer, or submit your own file for analysis.