Malicious PDF — malware analysis report

Static analysis result for SHA-256 e152ae19ff309b7d…

MALICIOUS

PDF

37.0 KB Created: 2021-05-22 17:11:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e8a250edec4cafa07361a89139c442e9 SHA-1: 5e1105eb7e4e2c006ba6caffdfc3e4fd6b5612fc SHA-256: e152ae19ff309b7dd84da5ec66ba53f2e4ce133e6099b6b56fd932c692a84578
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors disguised as 'game hacks' and 'free generators', specifically targeting Roblox accounts. The document body explicitly mentions 'How To Hack A Roblox Account Easy' and includes a call to action to access a 'ROBLOX GENERATOR'. The presence of multiple malicious redirector links indicates a high likelihood of this document being used for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/how-to-hack-a-roblox-account-easy-game-hack In PDF document text
    • http://neltalen.nl/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://rblx.landIn 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_off0000328e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x328E 25408 bytes
SHA-256: 205531b8b820eff33eefd81286cc6e2730cbfa549e1b5e6648eb99a2711206fb
font_01_sfnt_off00006db2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB2 18772 bytes
SHA-256: f0aa2a8f008262e8aa636f08cdffff7c9568ae6e0bf5f389be1472b9a6879674

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