Malicious PDF — malware analysis report

Static analysis result for SHA-256 54d9e9b2e3eee73e…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 20:28:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 5c4bea70a98a24488b5b45c781c299b2 SHA-1: cfb8ec5ff314ae241b4dffb9925488e9e677af1b SHA-256: 54d9e9b2e3eee73e7f7ae165a315bcd724a95dcef5c238df51f97fe9efef1ed9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free game hacks' and links to a known malicious redirector. The embedded URL and document body text strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely for further malware delivery or credential harvesting. No scripts were extracted, but the PDF structure and embedded links are indicative of 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/free-coin-master-hack-no-verification-game-hack In PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-client_GM479516143.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-stuff-2021_GM431946152.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-hack-2021-download_GM431946152.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-apk-hack-uptodown_GM431946152.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-real-credit-card-for-roblox_GM431946152.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-latest-version-hack_GM406889139.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
font_00_sfnt_off000032c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C8 22740 bytes
SHA-256: 85a55deb16f697a98f2f2910bc89204b70f36111c07704fa0d07c3bf73934ec3
font_01_sfnt_off000065dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DD 18300 bytes
SHA-256: cb2b7cb0059af51db9ca07fd0e0130e31ebff2afe995e407a7cf27ef7bb28351

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