Malicious PDF — malware analysis report

Static analysis result for SHA-256 5af48956b6fffaac…

MALICIOUS

PDF

35.1 KB Created: 2021-05-21 10:00:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 30c5dbb0f68a5116e1457321fb1085af SHA-1: 49e27f64dcbf9c9e9fa6dddfe3327f868495e35e SHA-256: 5af48956b6fffaac73f03ad5f06428908911130e31842c319e28cb5a5f7fe843
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/835599320/is-tiktok-pro-free-game-hack PDF link annotation
    • https://elibrary.stp-aviasi.ac.id/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/rbx-claim_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/play-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31C8 24428 bytes
SHA-256: 6a0160a182709aab3317dbdc3aaa2bcee2f4897e0b0a2c1317b0aafca68d88fb
font_01_sfnt_off00006a00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A00 17612 bytes
SHA-256: 6ef413c36748d4f177bff01cd17f08d7c1c9adac74d76adbdeaf7209e0572320

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