Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc22dfd409f7e6a…

MALICIOUS

PDF

47.8 KB Created: 2021-06-04 02:34:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ab17e69fc39f49e669865ef086ed7c4e SHA-1: 8ae0502b5e86b44099779541bd9f41b15556fab9 SHA-256: edc22dfd409f7e6a7797809a098cf0295724f66e1d569dcee8d98088a678caf8
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 0.9769

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-robux-offers-game-hack PDF link annotation
    • https://library.stikesmi.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/wurst-112-2_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/pubg-uc-lucky-spin_GM1330123889.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/robux-for-offers_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/300-daily-free-spins-coin-master_GM406889139.pdfIn 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_off00004e0a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E0A 28548 bytes
SHA-256: fdf2912e3d0326a8b689f75ebc1525551bc2ebb395749b79b10bc7c8a63743b1
font_01_sfnt_off00008f01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F01 2940 bytes
SHA-256: 9f6d695e492b9c0f6474d43ce45e9b34d92b1bb43ba289dafa46de6e2155c289
font_02_sfnt_off00009907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9907 18012 bytes
SHA-256: 2fb616bca13af88ff89276a9b2d2fcc075dc4ebb9507e4cf45ab0719cef726f6

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