Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac834516afd007b1…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 10:31:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2d7e0e5fe87bf55e2fbd6f3d00cdb2cd SHA-1: 11d9dc0dace8ab6bea1d4feec014ef7b620ee2d2 SHA-256: ac834516afd007b173a644c3c69662e73ee82e3a204b43fdd05f11505a632658
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures related to game hacks and free items, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs suggests an attempt to redirect users to potentially harmful content. No scripts were extracted, but the overall pattern points to a phishing or scam 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/free-roblox-shirt-templates-game-hack PDF link annotation
    • https://mountainholidaytreks.com/userfiles/files/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-app_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/daily-coin-master_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-images_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/hack-for-unlimited-cash-in-roblox-bloxburg_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/cheat-codes-for-coin-master_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
font_00_sfnt_off00002fb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB5 22516 bytes
SHA-256: de6caed865e1c22291919537c149506c5926a5675c6f9389311d4b8b3151d97b
font_01_sfnt_off00006203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6203 19476 bytes
SHA-256: d4dda0947c8e17980e88e1462510a52d759f4b560e466f6bfd07fe68f5c817f5

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