Malicious PDF — malware analysis report

Static analysis result for SHA-256 acc000c01b825b26…

MALICIOUS

PDF

42.4 KB Created: 2021-05-01 06:09:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: fc43f596e5918e4535b2e4d7258fd355 SHA-1: 60e83f4ffa6f9092769b5213d35d3c7f1d31eb2b SHA-256: acc000c01b825b2697f2f813e9fb8e11f625879da1849b90aa7b5aff15cb3483
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent lure related to game hacks, specifically for Roblox. The heuristic firings indicate that these links are intended to redirect users to potentially malicious sites. While no scripts were explicitly extracted, the nature of the lures and the embedded URLs strongly suggest a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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.xyz/app/431946152/roblox-free-pants-adidas-game-hack PDF link annotation
    • http://stikgiamakassar.ac.id/digilib/repository/wearedevs-roblox-hack.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-hack-robux-on-pc.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-robux-gen-website.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/guuudinfo-robux-hack-2021.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-hack-free-robux-no-downloading-2021.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-retail-tycoon-116-ifinite-money-hack.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/descargar-hack-de-roblox-para-pc.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-hacked-games-roblox.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/hack-para-jailbreak-roblox-2021.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-retail-tycoon-money-hack-2021.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_003_off0000409e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x409E 29476 bytes
SHA-256: 12d97339276ea48eb8f0c19d4931004fbd517639cd052aa477c17c8e63b736b8
font_01_sfnt_off0000829d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x829D 18728 bytes
SHA-256: eb3bcdeb057f78261af7aa31f56c4b6f1f42f798a88c4d3b45775214060b7cf3

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