Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e262eaf2ed368dc…

MALICIOUS

PDF

32.9 KB Created: 2021-07-20 05:11:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5b857e4fb47c9c0bc43e6aba4b507fdd SHA-1: 60a81792afd8251c9f35736faa8a99c1e1e84279 SHA-256: 2e262eaf2ed368dc2af5b025686a2954f40e3a32a2583472ce9e2d7a9947d5a4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to a known malicious redirector, disguised as a 'Roblox Help Free Robux' generator. The document body explicitly mentions 'Roblox Help Free Robux' and includes a call to action to access a 'ROBUX GENERATOR'. This indicates a phishing or scam attempt to lure users to malicious websites. No scripts were extracted, but the presence of malicious links and the lure suggest a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/431946152/roblox-help-free-robux-game-hack In PDF document text
    • https://nendientu.com/public/upload/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/free-robux-working_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/how-to-play-minecraft-for-free-on-pc_GM479516143.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
font_00_sfnt_off000029fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29FC 23160 bytes
SHA-256: bee6782ce95e2b090a48cc2099850e55e4fc3d3e17f3405252afb3d061de40d8
font_01_sfnt_off00005e3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3F 18452 bytes
SHA-256: af021c00065139885adfd27c3fba837a85dc9f772cd43399780b92b2fcd7233b

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