Malicious PDF — malware analysis report

Static analysis result for SHA-256 db2255aa1b002771…

MALICIOUS

PDF

45.4 KB Created: 2021-06-03 18:41:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b771e604977c1d8a85bfc65d7ec6570b SHA-1: 65b6807838c9bc88cf807c3fbb6634ef44933212 SHA-256: db2255aa1b00277153c57468d1f0a35e8e523b12cfae3532280936523c563b6d
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 0.9864

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.online/app/431946152/free-roblox-accounts-2021-with-robux-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/fbchampion-com_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/pastebin-hackear-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-images_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-roblox-templates_GM431946152.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_004_off000051de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51DE 25480 bytes
SHA-256: 15db8d29808217ee3c86d81cd5a5524dd2e29624a83f4a41aaa42a83de504a4c
font_01_sfnt_off00008c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5B 19076 bytes
SHA-256: a3899638bf51e335cbc40673d1471e0832e9a39f88469ef4ed0809ba61e6f618

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