Malicious PDF — malware analysis report

Static analysis result for SHA-256 9065921c0813fe5c…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 09:28:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 78ce2e0e0d21814b7ed087f9c641b0fb SHA-1: cbf355cd3797e54550ea7adc3ef80bf62c49e0f1 SHA-256: 9065921c0813fe5c059af7702bb7222ca1665cdeca939fc9e8d9f0b399afa618
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.tw/app/406889139/coin-master-hack-xyz-game-hack. The document body and heuristics indicate a lure for game hacks, likely intended to trick users into downloading malware or visiting further malicious sites. No scripts were extracted from this sample, but the embedded URLs and the nature of the lure strongly suggest a phishing or redirection attack.

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/coin-master-hack-xyz-game-hack In PDF document text
    • http://katalog.stikesmukla.ac.id/repository/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/ww-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-without-cheat-engine_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/cringe-trying-to-have-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-roblox-gift-card-codes-2021-september_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-codes-in-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/hacks-for-boku-no-legacy-alpha-2xexp-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-gems-roblox_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_off00002f6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6C 22708 bytes
SHA-256: 9775b969ecc36eff565f76910684a9a3ee25089a519e48e91a1fa7f4352ee1d3
font_01_sfnt_off00006248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6248 18496 bytes
SHA-256: bd2c90d618eff90014fde70917c30f451870fa3342cf3e365369efdfab30b31e

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