Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ed09e0a47fb4470…

MALICIOUS

PDF

33.1 KB Created: 2021-07-03 21:34:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d9c7c07e68a8d99e6f3f5b01b01ea67a SHA-1: 8c752119d235babc8fed4416e8d1209e393e9560 SHA-256: 3ed09e0a47fb447023a435307eeeafd80f8b05b747f931c486d8fe5aa8b65963
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic indicating it links to a 'game hack' generator, specifically targeting users interested in 'Coin Master'. The document body and extracted URLs reinforce this lure, pointing to `http://netcdn.tw/app/406889139/free-coin-master-coins-game-hack`. While no scripts were explicitly extracted, the PDF structure and the nature of the lure suggest it is designed to redirect users to a potentially malicious site for further exploitation or credential harvesting.

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/406889139/free-coin-master-coins-game-hack PDF link annotation
    • http://opac.stieimalang.ac.id/repository/rbx-points-free-robux_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/100-real-free-robux_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/roblox-apk-free-download-pc_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-guess-that-character-for-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/get-free-spins-on-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/medikit-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-dragon-ball-z-final-stand-hacks-download_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/robux-miner_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/robux-hack-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_002_off00002e64.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E64 22236 bytes
SHA-256: 4433d487d603605de189f7517f105a94f64c3c3e75290cfa5e3b065cbe42f15a
font_01_sfnt_off00005fa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA1 17996 bytes
SHA-256: e3fb1ca426c01543f38f1d1129ae452bef28a40365fbe99abf1b239340e30419

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