Malicious PDF — malware analysis report

Static analysis result for SHA-256 f35da67cc98f2507…

MALICIOUS

PDF

45.8 KB Created: 2021-05-12 06:01:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 271d1335241e17565097e6bdb0bcc3be SHA-1: a4ab31e32ca61509fd545baa97cede2617683424 SHA-256: f35da67cc98f250729845ad3d658ffde52c6f39597a1a10ae4d8cd951109a9b1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game-related generators and hacks, directing users to a malicious redirector URL. This redirector then points to other PDF files hosted on a separate domain, likely serving as a multi-stage lure or download mechanism. The ML classifier and specific PDF heuristics strongly indicate malicious intent, likely related to phishing or scamming users into clicking malicious links.

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 https://netcdn.xyz/app/431946152/roblox-redeem-card-codes-free-game-hack In PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-gfx_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-printables-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-spin-hack-no-verification_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_off00004c2f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C2F 29892 bytes
SHA-256: fa562f13a67f1aea733c9689ddbef51c7b187c52a3092555691a6136dff18d08
font_01_sfnt_off00008ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF8 18612 bytes
SHA-256: a80930eafb0fa49b70c8b74e6f01afa17dc8341ac3dd6991c9bc21ab4de62243

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