Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3840cd582b9b5af…

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 12:32:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 28b7c2c8f03229d70c36ffe818785ba7 SHA-1: de57b6a5b64d72077d4ff63ed72680ea11785597 SHA-256: d3840cd582b9b5af9b390a33646edc8c79be230637f129d6be2936d54f6a92e9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free codes, directing users to a malicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9141

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/479516143/minecraft-realms-free-codes-game-hack PDF link annotation
    • https://teatrofinisterrae.cl/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • https://teatrofinisterrae.cl/images/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • https://freegiftcodes.euIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000416f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x416F 27856 bytes
SHA-256: f3ed5b69900a29a818c87de700f0d853e03be6efce0b525c0dd554d1c1a51f79
font_01_sfnt_off00007f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F44 2840 bytes
SHA-256: 787e0768241fb57660bcc9c7f726cf687277c463cdf8c586c4782ee9d03c3606
font_02_sfnt_off00008902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8902 18216 bytes
SHA-256: 30a8f83054e231b1bb485b1ca025b33fda8ee43bcea67b958af1de796f39c45f

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