Malicious PDF — malware analysis report

Static analysis result for SHA-256 a76f8acd3d0ee028…

MALICIOUS

PDF

43.7 KB Created: 2021-06-03 23:05:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 48c1d57acf9d47f17d83fb67415c7b09 SHA-1: f1f8d3a96bf8b59fcb4eb6647c8c263f22e19055 SHA-256: a76f8acd3d0ee0284df2c76f902dd6511eee15c5869a1d97108b0d3f947333eb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link that masquerades as a free game hack or generator, directing users to a malicious URL. This is a common social engineering tactic to trick users into visiting potentially harmful sites. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/479516143/minecraft-pe-free-game-hack PDF link annotation
    • https://library.institutpendidikan.ac.id/repository/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-online-hack-download_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/mcpe-master-hack-unlimited-coins_GM406889139.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_off0000505d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x505D 25312 bytes
SHA-256: e86085340c39b2ecda80095e67ff0bbd3e8c7496ce950de67ba6a5235471d9d8
font_01_sfnt_off000089f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F8 17724 bytes
SHA-256: f623db3d5896acbfca75c1fa71b49e9ae1d6d1c000a87567f3c2fb9ea3a364ca

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