Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab25e4229152f9f4…

MALICIOUS

PDF

40.7 KB Created: 2021-05-20 16:23:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 593234c34939feb09024ae7db22b8b7a SHA-1: b6309425aee8866ca8de19c475b891d063b3cb65 SHA-256: ab25e4229152f9f4c731c67ba90eb93b45ead1b4c1c9610712d031a6d7f55e11
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, masquerading as game hacks. The document body explicitly contains a call to action 'CLICK HERE TO ACCESS ROBLOX GENERATOR' and a primary malicious URL. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7502

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/free-draw-2-roblox-game-hack In PDF document text
    • http://cornerwebstudio.com/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://cornerwebstudio.com/images/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
    • http://cornerwebstudio.com/images/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://cornerwebstudio.com/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://cornerwebstudio.com/images/free-coins-coin-master_GM406889139.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_off000033eb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33EB 25552 bytes
SHA-256: 352d21d328efdc437d8493bc3ebdb1cb09909d3a35e167d90496fb3086ea85ed
font_01_sfnt_off00006f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4D 3992 bytes
SHA-256: 43e72e756231cfd354bd65c2ed3b09ad4eff56ad11e7f155ed2920e6bb7860dd
font_02_sfnt_off00007c74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C74 18632 bytes
SHA-256: 1948321e46036ef7a86fce7363c42741d482fdecd1af70e946b235d8b00c49b1

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