Malicious PDF — malware analysis report

Static analysis result for SHA-256 99918d217eaeac53…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 10:09:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 8afa68b805c6f3968c06f53726a97249 SHA-1: 025c73c4e7d0a76f836ba1c87d0af1f91e8818a9 SHA-256: 99918d217eaeac53874f6ae4352407362315145b7dde3c849e1c2252a33c3991
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/coin-master-free-spins-11-01-2021-game-hack PDF link annotation
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-gewicht-heben-simulator-3-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-glitch-xbox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/arpirl-fools-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-hack-assassin-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-on-console_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/hacker-groups-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-games-at-roblox-2_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/invisibleble-hack-roblox-we-are-devs_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/tutorial-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-free-item-promo-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-robux-without-downloading-apps-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3357 22072 bytes
SHA-256: 56ccc0df3f6a336f63375623edccc0133d819c930995fc62f945198ac2685916
font_01_sfnt_off00006424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6424 18576 bytes
SHA-256: dc15c9aca5ee2f3edaf4f3f3393a78df3b5581a7d23d310761b394b7c3bd0baf

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