Malicious PDF — malware analysis report

Static analysis result for SHA-256 90c30d1100182472…

MALICIOUS

PDF

41.3 KB Created: 2021-05-11 08:11:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f5882f098202b09f2fe8552f255ebf18 SHA-1: 59abbc81afaf35af188ce872698b6f23795e5659 SHA-256: 90c30d11001824725d5e658c43573a5b77fdb3fc0adb325ce9505a2414b8d701
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-pet-food-hack-game-hack PDF link annotation
    • http://knjiznica-oroslavje.hr/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/roblox-controversy_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-use-redstone_GM479516143.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000479b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x479B 24420 bytes
SHA-256: 9ea59ff0a4204ab1f3fb8c09c18a292e1e3ac1f9c4285d5bffa9a8fc883e96e0
font_01_sfnt_off00007f84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F84 18208 bytes
SHA-256: e18efbdce36ef150d5aaea8ad3152999d2cd8d64b44f09ee0731d2d38d7a34d6

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