Malicious PDF — malware analysis report

Static analysis result for SHA-256 71b61ebb75885b08…

MALICIOUS

PDF

30.9 KB Created: 2021-07-19 08:41:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 59a39e326f08c80da0591b81696286c4 SHA-1: e31c8be2785daddbd4cba43a2074341bb71e3812 SHA-256: 71b61ebb75885b082d75b02b31afb7ec653f7b00f32ba40b86e272c080bbb23a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, with a primary link identified as a malicious redirector. The document body text and heuristics indicate a lure for free items or hacks, specifically mentioning TikTok generators. The presence of multiple links to other PDF files suggests a potential chain of malicious documents or further redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9387

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/835599320/get-free-likes-on-tiktok-game-hack In PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://www.tiktok.com/fypIn 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_off00002837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2837 22412 bytes
SHA-256: 03818576bd70f971d3b07f58455faa8cc8916ef28523e56c05580f37a45af8f0
font_01_sfnt_off000059a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59A8 17456 bytes
SHA-256: 782ce757928ab8849be8d7d6232199a595fd3f8ee03de5cb15c7b9ee803e6cfd

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