Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d30983ecf06f5fd…

MALICIOUS

PDF

36.5 KB Created: 2021-07-06 06:42:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fd037383ae91dcd03f2b690ae2dbb7d7 SHA-1: 13d0ea133c4d4c80fa04ac68eb0f886e6ce78e6b SHA-256: 1d30983ecf06f5fd6b1aaf9f782b98e35db20f3077cd5c9d29ed08166adfceb0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/406889139/coin-master-heaven-free-spins-link-2021-game-hack. The document body and heuristics indicate a lure for game-related cheats or currency, designed to trick users into visiting malicious sites. No scripts were extracted, but the embedded URLs and the nature of the lure strongly suggest 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.tw/app/406889139/coin-master-heaven-free-spins-link-2021-game-hack In PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/robux-hack-2021-september_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/op-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/what-are-some-websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/tiktok-free-to-watch_GM835599320.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/pubg-uc-vn_GM1330123889.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-hack-thinknoodles-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-roblox-neon-rideable-pet_GM431946152.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_off00003580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3580 23384 bytes
SHA-256: 12bf394311affc00e2715909bbc690aada45a22cb864209900837daab361bdd4
font_01_sfnt_off00006a39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A39 18860 bytes
SHA-256: dfc838dfabd2f26dfea1cee387d52c49c563aa6385bf606e9c812772a9b3008e

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