Malicious PDF — malware analysis report

Static analysis result for SHA-256 7123c35ec38a273f…

MALICIOUS

PDF

35.2 KB Created: 2021-06-26 01:44:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 86e3460389f628b38f0b4cf1ee23ffee SHA-1: 7c72e6a7a18a2bc800a3977fb0a4265c57be4f8c SHA-256: 7123c35ec38a273f3cf0877dd42e9c1be369d9940598e4214a6802f833047896
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded URLs and a document body that explicitly advertises free items for games, acting as a lure. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests an attempt to download a secondary payload. The document's content and heuristics indicate 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/free-muscle-t-shirt-roblox-game-hack In PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-skywars-money-hack_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/vechle-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/pubg-uc-avatar-hd_GM1330123889.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/rbx-claim_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/robux-offers_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn 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
font_00_sfnt_off00003146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3146 22560 bytes
SHA-256: 9a3c0be0aa8a517d81f4f914d0a8af23ba3cadf963618c2fcbfe43fd1a930f8c
font_01_sfnt_off000063c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C0 19376 bytes
SHA-256: dc6ed581c4ae0d9c91c2fe8dd2161b38f3fa2fcbffe9e0e1265c531bf3eceeb6

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