Malicious PDF — malware analysis report

Static analysis result for SHA-256 071d493cefeb0b12…

MALICIOUS

PDF

34.3 KB Created: 2021-06-29 06:34:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2748d3466fc020b21fad29c58abb290f SHA-1: c32cfca2ddb9866a9744f787eddcd3a8833bdf52 SHA-256: 071d493cefeb0b120a9b2d1a13e49626e11daabd90ba9b9d2a218e37cfde4c41
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free generators, directing users to a suspicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the embedded URLs and the nature of the lure suggest a phishing or malware distribution attempt.

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.co/app/431946152/brick-bronze-roblox-cheats-game-hack PDF link annotation
    • https://opac.itp.ac.id/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/tower-of-hell-roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/games-you-can-get-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hacking-the-game-the-streets-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/trigon-best-free-roblox-exploit_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/150-robux-free_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-instantly-get-free-robux-in-roblox-oprewards_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-private-server-free-download_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hack-roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/wiki-get-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-admin-thumbnail-roblox_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
font_00_sfnt_off00002f16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F16 22396 bytes
SHA-256: d2cfd0f7aa2bb2ee7726fb1bd1af7148d6bae002940d20fe71be0ab0541c8079
font_01_sfnt_off000060e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E3 19128 bytes
SHA-256: 2d4a7c1cdb40702482cf000022c33edb65e78b00ebc6cce333ae56819eb3b401

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