Malicious PDF — malware analysis report

Static analysis result for SHA-256 085c9063222c0b8e…

MALICIOUS

PDF

45.7 KB Created: 2021-05-10 13:34:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6e0c13171fa3e614691699ea75479774 SHA-1: 79d85ee35f8d7cc468b2e7f387c66d28cb1fd13d SHA-256: 085c9063222c0b8e2ada14b17770765a031d1f2c2e091a1e7414091fb529cb56
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "free Robux" or "game hacks" to lure victims. The document body and embedded links strongly suggest a phishing or scam attempt, likely designed to lead users to a compromised website or download further malware. No scripts were extracted, but the PDF's structure and embedded links are sufficient to identify the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/how-to-get-free-robux-not-a-scam-game-hack In PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/can-you-host-a-minecraft-server-for-free_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000491e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x491E 25600 bytes
SHA-256: a4b227764dd36fba07ac14ecbbd1f51352233d96a63ce2273cb1be6740438a91
font_01_sfnt_off00008459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8459 2984 bytes
SHA-256: f48a42092128aaa7f12d743957c40e50c80acc039f99e4cbcb22f28b2dbfba20
font_02_sfnt_off00008eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB9 18768 bytes
SHA-256: 022361ef70d0601eb321de045a15355e0ef134abc2a3262f50e5e6000d82738d

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