Malicious PDF — malware analysis report

Static analysis result for SHA-256 affe225fb76b817f…

MALICIOUS

PDF

44.7 KB Created: 2021-06-11 05:04:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3f39d3475046f2c4e715efecd72ba077 SHA-1: 4d5ca690f8f0a4707d28252341bc5310025b55c7 SHA-256: affe225fb76b817f5e222db3724282bb0a92e5b6c06d1a354f9eda2d9a1327ed
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 0.9865

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.tw/app/431946152/robux-giving-free-robux-game-hack PDF link annotation
    • http://www.stttekstil.ac.id/elib/repository/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/cheat-engine-not-working-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/hack-master-coin_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/cool-free-roblox-outfit-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-wikipedia-free-encyclopedia_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-invite-friends-free-spins_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-apocalypse-rising-hack-exploit_GM431946152.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_off00004ffd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FFD 25448 bytes
SHA-256: 412700883543fdefa61e6bdb5bb2c408969da23db824034ea37f0192cbdfc92e
font_01_sfnt_off00008b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B4A 18536 bytes
SHA-256: 3074daf50415ae66e55c39b4fbb9263c013ccfec937317d8ee7ee2684cca9fa9

Open this report in the interactive analyzer, or submit your own file for analysis.