Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdbaaa43c9914d22…

MALICIOUS

PDF

55.7 KB Created: 2021-06-03 22:06:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 178d1ac969ce05ec2e07b3effb6064a7 SHA-1: 0dc5bb795e69d57866b20a1f3dd9b2d6753328e2 SHA-256: bdbaaa43c9914d22463cfd12ff6e397343b2cd72acbf4f73f75f397a4275e67b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links and a lure for 'free generator / game hack' content, directing users to external websites. The primary URL identified is https://netcdn.online/app/479516143/minecraft-free-download-linux-game-hack, which is likely part of a phishing or malware distribution scheme. The presence of a visual download button further supports the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9358

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-free-download-linux-game-hack PDF link annotation
    • http://www.js100.com/uploads/ckeditor/files/pokemon-go-free-pokeballs-2021_GM1094591345.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-get-free-robux-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/robux-earning-websites_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://freegiftcodes.euIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005432.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5432 25588 bytes
SHA-256: c3415db5ded5b472b6e0fb950c941b7013df61ff41609b81e366b40a9639d0d5
font_01_sfnt_off00008e49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E49 7996 bytes
SHA-256: a2a97cf6e4a7ec4845fbdf59bba2e693c19e02618495e884e3b138116a0b3f37
font_02_sfnt_off0000a7a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7A7 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off0000b633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB633 18640 bytes
SHA-256: 2e09412aeccd6db579e17e260dc71f26a69ff1e6c71cb2a54a0bf8e01b9e41c1

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