Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b6656244846cc8a…

MALICIOUS

PDF

31.5 KB Created: 2021-07-19 08:53:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: d6754b41771fbcea7e9afd7cd15d819a SHA-1: 525cdd6d8b89f2a03873e886386c5684e86acca4 SHA-256: 5b6656244846cc8a591e130d32cc2bc84193c69e1c91eb94f633b3d2d57279f6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are flagged as malicious redirectors, specifically leading to a 'free generator / game hack' lure. The document body and embedded links suggest a theme of free game-related content, which is a common lure for phishing or malware distribution. The presence of multiple redirector links indicates a high likelihood of malicious intent to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9893

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/479516143/minecraft-bedrock-edition-download-pc-free-game-hack In PDF document text
    • http://behsanroshd.com/images/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/minecraft-free-android_GM479516143.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_off00002696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2696 22088 bytes
SHA-256: beb351df81944f94b9d6ed9234d988a4d1107fef615fdbbe268a99966679634c
font_01_sfnt_off0000575c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x575C 18828 bytes
SHA-256: 57b97413d46eb8dd02e8163e11e04ebb18f1b46f22b88b993c8d7eb158a8ca98

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