Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bf0df558eecf8f8…

MALICIOUS

PDF

40.8 KB Created: 2021-05-21 18:17:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4d0a9ed82b2eda850e4cb8ee288e7851 SHA-1: e5bcb4d727c38c65643c3c3fe82b27c4eebc800c SHA-256: 1bf0df558eecf8f8ed4bc6e4a83f60560aad98e3e58f52745c9462bc3a517b21
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, disguised as free game hacks for Roblox. The document body explicitly mentions 'Roblox Redeem Codes Free' and includes a call to action to access a generator. The embedded URLs likely lead to further malicious content or phishing pages, aiming to trick users into providing credentials or downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7445

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.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/roblox-redeem-codes-free-game-hack In PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/games-that-give-you-free-robux_GM431946152.pdfIn 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
stream_002_off0000359f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x359F 26104 bytes
SHA-256: 275ed243674db1a7490762f715aa67245d9cd4209f6c36f3d13e2f95671d918e
font_01_sfnt_off00007127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7127 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00007dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCE 18380 bytes
SHA-256: 20d0b662fcfcdd1cfb8c839e912a5e46386cbbaa083776d069a590b1aaf94574

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