Malicious PDF — malware analysis report

Static analysis result for SHA-256 45af319250a48805…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 20:09:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0c0ad0a7a682ebc72bb7df7aab8ae7a1 SHA-1: a453bc806db593db5365d3be0b5f0e5f20e42fb0 SHA-256: 45af319250a4880581591ee790b0fed91cb170852b85a904ce94cb4243d6a3f9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs, with a primary focus on luring users with 'game hack' and 'free spins' content. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a social engineering tactic to redirect users to potentially malicious sites. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence suggest a malicious intent to trick users into visiting harmful web content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-free-spins-11-01-2021-game-hack PDF link annotation
    • http://e-library.dharmawangsa.ac.id/repository/cheat-roblox-november-2021_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/go-thru-walls-roblox-jailbreak-hack-2021_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/how-to-get-free-robux-easy-hack_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_off000031d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D4 22664 bytes
SHA-256: 9986231046705d71129f19c996d8185fea26fd56e4783d3f04247e219dde5df4
font_01_sfnt_off0000645a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x645A 18576 bytes
SHA-256: dc15c9aca5ee2f3edaf4f3f3393a78df3b5581a7d23d310761b394b7c3bd0baf

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