Malicious PDF — malware analysis report

Static analysis result for SHA-256 954f876afa11fdcd…

MALICIOUS

PDF

45.4 KB Created: 2021-06-03 14:29:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 14fddd1dba219ac716c5e1bfc7651eb9 SHA-1: 23b6899ad4bb7a7fd952f51d195e84cc65e23345 SHA-256: 954f876afa11fdcd174a7c6231259047770b3a4c5b895ce13b362a240c331d99
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF document was flagged as malicious by an ML classifier. It uses a ClickFix paste-and-run lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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 https://netcdn.online/app/479516143/minecraft-hacker-skin-game-hack PDF link annotation
    • http://digilib.iailm.ac.id//repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/pubg-uc-lucky-spin_GM1330123889.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/unlimited-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-kid-friendly-no-human-verification_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_004_off00005575.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5575 25944 bytes
SHA-256: 2bd15d48d2e6c364a9d86fdd23d8eb435e44f75482f23e03fcd46f3e698ed7bb
font_01_sfnt_off000090a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90A0 17740 bytes
SHA-256: 91fe2762de83ff68ec278d498415159af7d0ffb5c1d0151dc7294afbb77550eb

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