Malicious PDF — malware analysis report

Static analysis result for SHA-256 15a83de4442219aa…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 10:40:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 7cb150ac564ca1fda2f241d72ecc6056 SHA-1: 464a122a5a05e52f469254173c18c6ea784ac9ea SHA-256: 15a83de4442219aaf46eb994439992a6aedf03de6330836247eb496a4e67ce4b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body also contains this URL, reinforcing the lure. While no scripts were extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to trick users into downloading malware or visiting a phishing site.

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/479516143/minecraft-pocket-edition-download-free-pe-calculator-game-hack PDF link annotation
    • http://opac.library.uib.ac.id//repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/ant-man-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/coin-master-free-items_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/grab-points-login_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/free-robux-no-hack-or-survey_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/roblox-fun-com-free-robux_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
font_00_sfnt_off00002f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8B 21936 bytes
SHA-256: f6a8048fabddee4216841690ff0837713eff4d77e85dac4c64df29f6f2a19775
font_01_sfnt_off0000601a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601A 19044 bytes
SHA-256: 34b20f278f24286c6699cd4d98c19fc9e238f7be3ea9ba45b8deb04e7e0e65ff

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