Malicious PDF — malware analysis report

Static analysis result for SHA-256 273a2fdef7a1597c…

MALICIOUS

PDF

38.1 KB Created: 2021-05-22 20:35:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e50c44a289ede711794ae37e4bb6f568 SHA-1: d98a332a19b6c23bdeb5450109fb20921ea9183d SHA-256: 273a2fdef7a1597cb3b0f4d1fda6b284afb6cc7a081dbcf0a18c790504691554
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering 'free generators' or 'game hacks', which are common lures for malicious downloads. One primary URL, https://netcdn.xyz/app/835599320/free-tiktok-followers-no-survey-game-hack, is flagged as a known malicious redirector. The document body also contains a call-to-action phrase 'CLICK HERE TO ACCESS TIKTOK GENERATOR', reinforcing the deceptive nature of the content. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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/835599320/free-tiktok-followers-no-survey-game-hack In PDF document text
    • http://www.maakherumusic.net/images/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/tiktok-free-netflix_GM835599320.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002f37.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F37 25564 bytes
SHA-256: f1a1bbeaa56454188bb25bd19596dd131d8cc9c129ca00804a67005420a9636f
font_01_sfnt_off0000698f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x698F 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off0000739f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x739F 18128 bytes
SHA-256: 4d5ae90dc7158db100f8a60f18795856627c30e44bb6186b706c2f28ceb56c30

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