Malicious PDF — malware analysis report

Static analysis result for SHA-256 a171e564f3202e4c…

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 11:32:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 7538016657b46a4fba0d48dd4c8dc5eb SHA-1: 52ac23fb06a2b6f420ee85f2996ca46cc95b79ed SHA-256: a171e564f3202e4c1f59b58351fa7dd20c7f735fa8876c175ed39c999d168d14
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-heaven-free-spins-today-game-hack PDF link annotation
    • https://www.simplenepaltravel.com/userfiles/files/free-robux-967k_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/instagram-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/best-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/robux-redeem_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/100-robux_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/free-robux-websites-2021_GM431946152.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_off00003416.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3416 22740 bytes
SHA-256: c0e8f190042ea915f0a05d21e970eb7625c84e9af647c137d23609cfc23ab664
font_01_sfnt_off000066d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D4 18640 bytes
SHA-256: 3d9153b17c01349321dbf9895197e00a389ef43fe3f4ac06fe2a253dcac379fc

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