Malicious PDF — malware analysis report

Static analysis result for SHA-256 5089372a4b26c0b5…

MALICIOUS

PDF

33.2 KB Created: 2021-07-09 03:23:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7fe215c72e8748d06ac2258065230f4f SHA-1: 1d15809706e2714c212f16503a614f4022c54a93 SHA-256: 5089372a4b26c0b58bb3b408a96e6531b527875edb8bd5469493c192da647a4b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and references to popular games, suggesting a lure for users seeking cheats or free in-game items. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs indicates an attempt to redirect the user to a potentially harmful resource. No scripts were extracted from this sample, but the overall pattern suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-pink-free-robux-game-hack In PDF document text
    • http://www.vista-design.hr/files/roblox-generator-com_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • http://www.vista-design.hr/files/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/how-to-hack-coin-master-with-root_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/is-tiktok-free-on-iphone_GM835599320.pdfIn PDF document text
    • http://www.vista-design.hr/files/roblox-imagine_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/20210-pubg-uc-in-indian-rupees_GM1330123889.pdfIn PDF document text
    • http://www.vista-design.hr/files/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/coin-master-download_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/wurst-115_GM479516143.pdfIn PDF document text
    • http://www.vista-design.hr/files/how-to-win-robux_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/game-joining-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/hacks-para-roblox-tycoon_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/roblox-t-shirt-free_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D3E 21444 bytes
SHA-256: b9b4f7779abba847b4a616a7529785fd05b51e2db93d5eb888a6e3863640831d
font_01_sfnt_off00005c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C33 19236 bytes
SHA-256: 7f3ae533f1b20c2c9ad227d8ec2a812f6ca4ef2a098c849ad4932b76dc1c09fe

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