Malicious PDF — malware analysis report

Static analysis result for SHA-256 129b2d5b1aa9fc6d…

MALICIOUS

PDF

42.5 KB Created: 2021-05-19 22:22:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ba5bd87ce2f6233fd38c84c8e70fd967 SHA-1: 4fd2f9a8a025fb81fe67ac4a3415ab113de7d671 SHA-256: 129b2d5b1aa9fc6d8290c15aab208881a98f3bb88c014e86ed2b43022462a960
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and a lure for game hacks, strongly suggesting a social engineering tactic to redirect users to malicious sites. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of compromise.

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/without-pokemon-go-free-evolution-game-hack PDF link annotation
    • https://ezgolfer.com.tw/image/data/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/robux-match_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/wurst-minecraft_GM479516143.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-spins_GM406889139.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_off000049c9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C9 24820 bytes
SHA-256: 4dd89d058f3811f03631811e1c5d3d1869e5373e44fdf4289cdbac336edb5e8e
font_01_sfnt_off000082e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E3 18756 bytes
SHA-256: ca15ce7c7b94928847f5d969f04c734fcd0c64ab609849e44e41cb96cfdb4f04

Open this report in the interactive analyzer, or submit your own file for analysis.