Malicious PDF — malware analysis report

Static analysis result for SHA-256 da3ed0019e88984b…

MALICIOUS

PDF

49.6 KB Created: 2021-06-03 09:17:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d8e2a1645100e7ab95eadbc0b3b668af SHA-1: 997cfa9e0a4b3bbaaa926382dcf2ea205d73c5fc SHA-256: da3ed0019e88984b228d53f800827a6566cd208e71cd6a3431654a9ddededd1c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body, though heavily obfuscated, contains references to 'free Roblox groups with funds' and a URL that aligns with the heuristic. The ML classifier also flagged the PDF as malicious, indicating a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/free-roblox-groups-with-funds-game-hack PDF link annotation
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-coin_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-get-cheap-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/i-robux_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-robux-2021_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005179.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5179 28496 bytes
SHA-256: b898933f2c23e7edbcf3321f1aff862346c8660795967e849f66570f184a20f0
font_01_sfnt_off000091b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91B6 3400 bytes
SHA-256: 75c3a8e6f5c68e0746f893c922e57fd7e888a21fb038f9ae3eedb0a197a59e24
font_02_sfnt_off00009cda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CDA 19028 bytes
SHA-256: 3400496694c4b95422a50533d9ab07e9ced2fd8b85931bd61225c3b69c3e3d7c

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