Malicious PDF — malware analysis report

Static analysis result for SHA-256 a654abbd5a23e2b1…

MALICIOUS

PDF

33.6 KB Created: 2021-07-04 01:57:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6cab31045127492b72087d5cb65ec37f SHA-1: 9b12efd6f04c29285729b695e2f63b958f1dd8d3 SHA-256: a654abbd5a23e2b1b51817cc27bc10fe75e7f3dff10cbee7d6fdb9b927a911b6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that redirect to a game hack lure, aiming to trick users into downloading potentially malicious content. The ML classifier strongly indicated maliciousness, and the presence of multiple game-related lures suggests a social engineering tactic to drive traffic to malicious sites. No scripts were extracted, but the document's structure and embedded links are indicative of a phishing or malware distribution attempt.

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/431946152/hack-a-game-game-hack PDF link annotation
    • http://perpustakaan.stikim.ac.id/slims/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-hack-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-cheat-engine-cheat-table-executor_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/hack-tool-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-robux-hack-no-survey-no-download-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/groups-on-roblox-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-cloth-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-booga-booga-script-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-legit-2021-no-survey_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
font_00_sfnt_off00002ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF8 22164 bytes
SHA-256: a111b112254c7738ff009395379c9ed07e3c063919e9e223a3724548e7c24bf6
font_01_sfnt_off00006050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6050 18332 bytes
SHA-256: ba9a5ca92ba82b06d62fb7d932d8411f4ef5b8c8ca9324ffa17e0e8336b0cdba

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