Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d95fa4a734b9825…

MALICIOUS

PDF

35.7 KB Created: 2021-07-03 12:20:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5abfe5b1cc96ac3a997f67ddfe457203 SHA-1: 1045cafa13a1e1c47b8ed248d1106489d2889ea8 SHA-256: 2d95fa4a734b982541b2281f95b1d76a4bf348ea99077d61f9a92e4e793eb34c
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 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hack-tool-v1-9-download-free-pc-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/how-to-install-free-song-to-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/robux-cheat-cods_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-hacks-in-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-2021-easy-no-working_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/face-made-when-roblox-was-hacked_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/no-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-roblox-scripter_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/this-app-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-1-million-robux-free-birth_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/get-free-robux-on-ipad-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_002_off00003140.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3140 23312 bytes
SHA-256: b7f20a4b9c1771743aaea6e2f478433c9ea0d07e512dfdf08db0dc77f239de46
font_01_sfnt_off000065d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D8 19308 bytes
SHA-256: fa43116c370bdb4d48683ed39b22eac62c114741e11a3318869e145fb497b5ab

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