Malicious PDF — malware analysis report

Static analysis result for SHA-256 71456c9756bf040b…

MALICIOUS

PDF

46.7 KB Created: 2021-06-11 08:27:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3fb56d5a687e0c04a0b352902f3345bc SHA-1: 108eefdb23c70ae89e31de99a24dca132350f415 SHA-256: 71456c9756bf040b81a43b3eaa05752cd035e4a7c5adea6768f89a7a0bec0343
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 0.9748

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.tw/app/431946152/roblox-project-pokemon-hack-game-hack PDF link annotation
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/arts-78-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-pro-tiktok_GM835599320.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/free-premium-in-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/unlimited-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-roblox-promo-codes-2021-for-robux_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/admin-free-download-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/roblox-free-hats-2021_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/how-to-get-guns-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/roblox-steves-one-piece-hack_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/hack-prison-life-roblox-2021-pc-dansploit_GM431946152.pdfIn PDF document text
    • https://www.bandicam.comIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005077.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5077 24320 bytes
SHA-256: bc6e10df1390b89bb3a6bf5816b9af670ed7b31078577a933ee3ad908f8a1a34
font_01_sfnt_off00008827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8827 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000091d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91D8 18888 bytes
SHA-256: 7a51d74ff62e9512ba04389513f8f272336ad84b365302c92225135fcb127e25

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