Malicious PDF — malware analysis report

Static analysis result for SHA-256 f08a26900ef62865…

MALICIOUS

PDF

48.2 KB Created: 2021-06-03 09:25:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5206e0122f9fa840d62b8575123b6b3e SHA-1: 0ddbc2c5c0094dd4f9f22ce106220258367c1949 SHA-256: f08a26900ef62865452b80e40cdcf944f9209a327864d76c6899e70fe45972db
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites that are flagged as malicious redirectors, specifically promoting 'game hacks' and 'free generators'. The presence of these links and the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic strongly suggest the document is designed to lead users to potentially harmful content or further malware. Although no scripts were explicitly extracted, the document's structure and embedded URLs indicate a phishing or social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/406889139/coinmaster-game-hack In PDF document text
    • http://lib.kunci.or.id/repository/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/easy-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-coin-master-s_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/pubg-uc-hack-no-verification_GM1330123889.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-apk-mod_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51F8 25432 bytes
SHA-256: fbe082d449fdf916ceb05a052322d40d80a3d657863aa76a79bb7d7f1c5bc76d
font_01_sfnt_off00008aa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA7 3560 bytes
SHA-256: 9d03f7c6c62ba3e7fdc0441e9d982a863b2b60b781165d6920512f68ecc4a440
font_02_sfnt_off0000972d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x972D 19136 bytes
SHA-256: 2cd040d70777c5a3365d3ee62d0c635538479f953e6a1dd7e0dabb3189396a86

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