Malicious PDF — malware analysis report

Static analysis result for SHA-256 70b9158036849095…

MALICIOUS

PDF

42.5 KB Created: 2021-05-13 21:31:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e7245bc30777593000ab920d0333ee41 SHA-1: 8d714d20d98185a42a9a6eb4879f1786dcb6e2fe SHA-256: 70b9158036849095c7cad31c331128e98e2f06c8ae7e91e55cff3f1184031070
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one that redirects to known malicious infrastructure associated with game hacks and free currency lures. The document body and embedded URLs suggest a phishing attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly indicate a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/can-you-get-free-robux-on-roblox-game-hack In PDF document text
    • https://www.similar.com.tw/upload/files/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/withdraw-robux_GM431946152.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/minecraft-login-free_GM479516143.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/minecraft_GM479516143.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://www.similar.com.tw/upload/files/real-robux-generator_GM431946152.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
stream_003_off00004940.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4940 25096 bytes
SHA-256: c637ef21a703d7dc49c6f38aac2b0b07c24e67ed345c25c20019d3a2e1b7ac04
font_01_sfnt_off000082ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82ED 18580 bytes
SHA-256: 0d0c29456045ba8700eeeb9b5d08ef238a74b3c73615dbb1a220be23830403a6