Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f3aa30c73e35826…

MALICIOUS

PDF

43.4 KB Created: 2021-05-22 00:16:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 34321ba331a33b16427cea7edbfb0307 SHA-1: 11c806c9a90f11d00f3d6ae9c42695044c420bec SHA-256: 1f3aa30c73e35826b85315cd4b5c976a7978c720b0abd54a64484c7a593d0960
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and lures related to 'free Robux' and game hacks, indicating a phishing or scam attempt. The primary URL, https://netcdn.xyz/app/431946152/free-robux-gift-card-codes-2021-game-hack, is flagged as a redirector. The document body also contains calls to action, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7947

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/free-robux-gift-card-codes-2021-game-hack PDF link annotation
    • https://bapalaye.org/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://bapalaye.org/images/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • https://bapalaye.org/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://bapalaye.org/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://bapalaye.org/images/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000343d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x343D 24288 bytes
SHA-256: 739cefe53c45ae075372cc2e00b22c19a69f02b025bcb1b02a18c38b739aba11
font_01_sfnt_off00006bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC2 2820 bytes
SHA-256: d88f25cfe237a714f996150a11dd8a058f0f7c3e9d1ae91c17b46c10409b6c0b
font_02_sfnt_off00007557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7557 6636 bytes
SHA-256: 62075f0fe13502d46afb6e55e83d440c29ef4988399537df1f86e7653ce3b744
font_03_sfnt_off00008564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8564 19044 bytes
SHA-256: a83203ba6d4d8e4db234da74518c811315008a13a6a61ff598d06d89853e7c2b

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