Malicious PDF — malware analysis report

Static analysis result for SHA-256 f96b5347c48f9f2f…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 23:28:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: b89cf4bc0fb487bc12dded7541110296 SHA-1: 40d491ddd7807571dfd682a841bf851ae461b301 SHA-256: f96b5347c48f9f2fa6f264f8f7ce54954459c7638a9bd219f4ce276427c49215
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The embedded URL http://netcdn.tw/app/406889139/lastrick-com-coin-master-hack-game-hack is identified as a malicious redirector. The document body and heuristics suggest a social engineering tactic to trick users into visiting potentially harmful sites, likely as a precursor to further exploitation or malware delivery.

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/lastrick-com-coin-master-hack-game-hack In PDF document text
    • https://library.sman1berau.sch.id/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-with-rixty_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-spin_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hacking-ldshadowladys-roblox-account_GM431946152.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_002_off00002dda.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DDA 23196 bytes
SHA-256: 607cde4f737ef1898c77d6b619c25e1cd64b1e5bb6158777bd43dc00c62a7ba4
font_01_sfnt_off000061da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DA 18264 bytes
SHA-256: 7487f1ced9a0ef44a39375eecee508f8bc18e69c364675b0881c5394564d02ce

Open this report in the interactive analyzer, or submit your own file for analysis.