Malicious PDF — malware analysis report

Static analysis result for SHA-256 bce34e6ab8b03c22…

MALICIOUS

PDF

43.9 KB Created: 2021-06-09 06:09:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5715a2b883591c4984644c101676b092 SHA-1: 937a581edca5d32a4064a13780dde96e03f9d746 SHA-256: bce34e6ab8b03c22498d1b7cf64cde9545a144a7d22baf31e936f11a610cc82d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, primarily offering game hacks and cheats, which is a common lure for malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs reinforces the likelihood of a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and embedded links suggest it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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.tw/app/431946152/speed-hack-roblox-jailbreak-cheat-engine-game-hack PDF link annotation
    • http://elibrary.smknesbu.sch.id/repository/pubg-uc-and-bp-hack_GM1330123889.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-rewards_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/robux-adder_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-how-to-get-free-robux-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-weight-lifting-simulator-3-cheat-codes_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-use-hacks-on-roblox-pet-sim-2_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/robux-hacks-2021_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_off00004cd7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CD7 25068 bytes
SHA-256: ffd525afb480464861fcb7086f08afc316a6f8b6e3174d06ddd2e799cbe5ee97
font_01_sfnt_off00008684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8684 19376 bytes
SHA-256: a57b5437bdc559de37f094dc809f706eebb92b44623d8e42b6deb42125cddec9

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