Malicious PDF — malware analysis report

Static analysis result for SHA-256 518f8d2551c534c4…

MALICIOUS

PDF

36.7 KB Created: 2021-05-23 02:08:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 028fb8df1fefda9d01ff0c18b3c20c7c SHA-1: 71814354a4a8a2ff49eb07e41aa6a5044ed0f7c1 SHA-256: 518f8d2551c534c455bad7f3e7a6fd3ca7ec43bb41ad5acd804125e2d1ae6f2f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector, which is a common lure for malicious downloads or phishing. The document body, though partially garbled, also contains a URL matching this theme. No scripts were extracted, but the presence of external URIs suggests the PDF is designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-free-download-windows-game-hack PDF link annotation
    • http://bagliomangiapane.it/images/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://bagliomangiapane.it/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bagliomangiapane.it/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://bagliomangiapane.it/images/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://bagliomangiapane.it/images/spin-free-coin-master_GM406889139.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_002_off00003413.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3413 25412 bytes
SHA-256: c39d2375cb3f3633a6a9a45391bfba5637c56382867793b4140808aac82b2114
font_01_sfnt_off00006d99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D99 18488 bytes
SHA-256: 01dcb0f2ff627f41b1d4924369c472c3c2df1c4c10fc263e12ce9879fd09d82b

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