Malicious PDF — malware analysis report

Static analysis result for SHA-256 87e1e0b93de3ac57…

MALICIOUS

PDF

35.9 KB Created: 2021-07-03 20:12:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: bf2ab11d508f26d36ebfb5d17d9e7eae SHA-1: 7740f355dabd71f142238a7afd6a17140d842323 SHA-256: 87e1e0b93de3ac574906b4410e9a740503de9ee9eb00b7b31716242e06912c88
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many of which are designed to appear as game hacks or generators for popular mobile games. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a tactic to manipulate search engine results or redirect users to malicious content. The primary lure appears to be a 'coin-master-hacksco-game-hack' URL, which is likely a gateway to further malicious activity or scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-hacksco-game-hack PDF link annotation
    • https://privatearrangements.co.nz/public/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/how-to-hack-in-ice-mountain-roblox_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-roblox-accounts-with-eto3k_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/how-to-get-the-stuff-from-roblox-hack-week-2021_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-roblox-toy-codes-december-2021_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/roblox-sir-robux-hack_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/get-500k-robux-free_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/tiktok-free-unblocked_GM835599320.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/roblox-how-to-get-a-free-group_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/how-to-hack-one-mill-in-roblox_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
font_00_sfnt_off00003810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3810 22680 bytes
SHA-256: 647be73434fb97b86ee31df2bd6b0457428c6538bd907fba787c1e2a1c25c2ca
font_01_sfnt_off00006a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8A 18004 bytes
SHA-256: 2f3a5855c5bac228d8d27cc7f61b57eebad79d58a924e470a0477843dff273c7

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