Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d2651557d1a5b79…

MALICIOUS

PDF

42.0 KB Created: 2021-05-20 04:32:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e7e09220878115c7122c111021dca89a SHA-1: 7945b14211ffc25ab55821aae391269c64e28a01 SHA-256: 1d2651557d1a5b79c5d1cd47f4bc0ca36f56845a61367a44abb922eddef96edb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'Pokemon Go Fest Free Tickets' and a 'game hack', directing users to a suspicious URL. This URL, along with numerous others found in the document, likely serves as a landing page for malware distribution or phishing. The ML classifier strongly indicated maliciousness, and the presence of external URIs and a game hack lure points to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/1094591345/pokemon-go-fest-free-tickets-game-hack PDF link annotation
    • https://cluster-consulting.com/images/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/roblox-comroblox_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/robux-miner_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/fast-robux-online_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/lazy-blocks-com-free-robux_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
stream_003_off00004941.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4941 24844 bytes
SHA-256: 8cddb0507d16b8eefe388be226857054b0e047eddc9a40567f654e949b46e3fd
font_01_sfnt_off000082a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A6 18068 bytes
SHA-256: 3cd60d7a27ed42e4336ccc7416b4d8d030849907fbe22b10e613a57a250e4235

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