Malicious PDF — malware analysis report

Static analysis result for SHA-256 f268cc74b5aca337…

MALICIOUS

PDF

47.3 KB Created: 2021-06-03 12:08:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 3f6646caf86fa6726b0152d5164d2bb6 SHA-1: f19dbf7d3aed0a2c827088eaa34e48bbf8520015 SHA-256: f268cc74b5aca337d40f1229dc8ec340dd82ffee0ca20e94a20076579a92be90
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a free generator or game hack. The primary malicious link redirects to a known malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a potentially malicious site for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/479516143/minecraft-windows-10-free-code-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/robux-money_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-hair-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000521d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x521D 24776 bytes
SHA-256: 71cec1f8d7c0a232ab8e774cc5c78bc813573cad73750cd63c129eff876068ce
font_01_sfnt_off00008ae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE8 3056 bytes
SHA-256: 3bf38ccea0f059764ae863929582790583b2dd886e86d92a85837ff3e16544f0
font_02_sfnt_off0000955d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x955D 18524 bytes
SHA-256: 61f4e129dbb086a6f9797ef369c55cdd3b58d633037fca8f4f59eaf5785788a4

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