Malicious PDF — malware analysis report

Static analysis result for SHA-256 657557ba58a8182b…

MALICIOUS

PDF

35.7 KB Created: 2021-07-04 08:53:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: cc0aff698266e8811c4fcdcc418063c8 SHA-1: 0b3517d2d0dd0668b57d661911b846b30a566084 SHA-256: 657557ba58a8182b1ebaddc0bed41fa33544f03fe2713447d9dce95b870c1647
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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-spins-and-coins-coin-master-game-hack PDF link annotation
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/how-to-get-202100-robux-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/roblox-generator_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-roblox-ben-10-games_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/fun-robux-hack_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/el-hacker-de-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/deluxe-ninja-sword-for-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/roblox-glitches-and-cheats-for-lumber-tycoon_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/how-to-play-minecraft-for-free-on-computer_GM479516143.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000348b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x348B 23120 bytes
SHA-256: ce37ce9d8323a73c837fd80c63bfff65fdfe1695f500cdb49429401375bcc91b
font_01_sfnt_off000068a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A7 18348 bytes
SHA-256: e3514f5c13c59f74fe131b320bb4a7a21799b0fccf5b53c141d50f68870e844d

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