Malicious PDF — malware analysis report

Static analysis result for SHA-256 f13b25dc31a15077…

MALICIOUS

PDF

40.9 KB Created: 2021-05-01 03:57:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 32aa28d9875a26c39cc75a9a0542d284 SHA-1: a8a447bf79224c1c7adaa8fbbb4568bbe5f0eeb2 SHA-256: f13b25dc31a1507760548e84123d8e06c7881760c02b1bacbbcf74db8399c948
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9941

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/431946152/boku-no-roblox-remastered-cheat-codes-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-accounts-dantdm-with-robux.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/best-hack-for-robux.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-no-download-or-human-verification.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-free-generator-unlimited-robux.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-robux-and-tix-generator-free-download.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/rxgate-cf-free-robux.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/rbxboost-get-free-robux.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-codez-apk.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/youtube-robux-hack-html.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-group-rank-hack.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004125.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4125 25828 bytes
SHA-256: 6e57749157f3c5f97c2b609d9a90a2dca9bd8bcd1020ebb0dd0074a22d64e741
font_01_sfnt_off00007bd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD5 19024 bytes
SHA-256: ffc67523bfe73ec89e53887d24b89cd55476a66a65a65a77f9db255dc0107ec1

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