Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf20fa9b5e6604b7…

MALICIOUS

PDF

44.6 KB Created: 2021-05-12 21:32:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 79c25162b5de98c8066d20acc5aadf79 SHA-1: 5c3482a0e2f8ba1a13fb5f8726e673be1f9a5475 SHA-256: bf20fa9b5e6604b77fe980bd55eb4d6b454836bc269b050fcb0783ee413acb81
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to "Coin Master" game hacks, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the 'game hack' lure suggest an attempt to trick users into visiting a site that may host further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/como-hackear-coin-master-2021-game-hack PDF link annotation
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/coin-master-get-free-spins_GM406889139.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-learning.mtsn-1-pasangkayu.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-download-free-pc_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_003_off00004e8f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E8F 27116 bytes
SHA-256: 550fb0fcf1a8af1206e0737fcf29ce41bda5632f7498c2e4d62d0bac77bb782c
font_01_sfnt_off00008bd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD6 18380 bytes
SHA-256: 7d079b1918a151c222a156c250c5aa0e1b0afb08b6f17fdb7ccf3df79397c72b

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