Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e7cd0a84c49a742…

MALICIOUS

PDF

41.4 KB Created: 2021-04-23 15:38:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14
MD5: a3e2116a4994e8448be0e6e049a8e81f SHA-1: 7aa82edd6030c1f99a83787dcf47408b02c6fafb SHA-256: 3e7cd0a84c49a742cbfa1cd6abaecd8b258afdefe9df561f9772dca5fb54cc0a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free Robux and game hacks, directing users to the URL https://netsecure.top/app/431946152/how-to-get-free-permanent-robux-game-hack. This URL is likely part of a phishing or malware distribution chain. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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://netsecure.top/app/431946152/how-to-get-free-permanent-robux-game-hack PDF link annotation
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/wwwrobloxcom-free-roblox.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/anarchy-roblox-hacks-site-v3rmillionnet.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/can-u-hack-roblox.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/how-to-get-a-free-dominus-roblox.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/how-i-can-get-robux-free.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/oprewards-robux-free.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/cool-hacked-weapons-roblox-script.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/list-of-roblox-hackers.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/town-roblox-hack.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-robux-for-watching-ads.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_off00004056.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4056 26788 bytes
SHA-256: 9ed05d5464a04aa929691893348ad7cbbb37110bcfdd6e2cf58da736ba5ef169
font_01_sfnt_off00007e13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E13 18924 bytes
SHA-256: 10f90e32e8cd9166cc1b571bb050bde846f85b82d2a618f8ce9951302bd2cc29

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